Wu, Rex H. An identity from Viète. (English) Zbl 07279644 Math. Mag. 93, No. 4, 307 (2020). MSC: 97G60 PDF BibTeX XML Cite \textit{R. H. Wu}, Math. Mag. 93, No. 4, 307 (2020; Zbl 07279644) Full Text: DOI
Basol, Kerem; Tal, Omer Faruk; Cangül, Ismail Naci On elliptic trigonometry. (English) Zbl 07172221 Proc. Jangjeon Math. Soc. 22, No. 4, 631-648 (2019). MSC: 97G60 PDF BibTeX XML Cite \textit{K. Basol} et al., Proc. Jangjeon Math. Soc. 22, No. 4, 631--648 (2019; Zbl 07172221) Full Text: DOI
Boas, Harold P. The oldest trig in the book. (English) Zbl 1434.26001 Coll. Math. J. 50, No. 1, 9-20 (2019). MSC: 26-03 26A09 01A05 97G60 PDF BibTeX XML Cite \textit{H. P. Boas}, Coll. Math. J. 50, No. 1, 9--20 (2019; Zbl 1434.26001) Full Text: DOI
Caglayan, Günhan Visualizing composed rotation through dynamic geometry software. (Portuguese) Zbl 1415.97001 Gaz. Mat., Lisb. 186, 22-26 (2018). MSC: 97U70 97G60 PDF BibTeX XML Cite \textit{G. Caglayan}, Gaz. Mat., Lisb. 186, 22--26 (2018; Zbl 1415.97001)
Wildberger, Norman J. Rotor coordinates, vector trigonometry and quadrilaterals, with applications to the four bar linkage. (English) Zbl 07047832 J. Geom. Graph. 22, No. 2, 257-268 (2018). MSC: 51N20 70A05 97G60 53A17 PDF BibTeX XML Cite \textit{N. J. Wildberger}, J. Geom. Graph. 22, No. 2, 257--268 (2018; Zbl 07047832) Full Text: Link
Diamond, Harvey The rational approximation of small angles. (English) Zbl 1407.97011 Coll. Math. J. 49, No. 1, 57-59 (2018). MSC: 97G70 97G60 51M25 42A10 PDF BibTeX XML Cite \textit{H. Diamond}, Coll. Math. J. 49, No. 1, 57--59 (2018; Zbl 1407.97011) Full Text: DOI
García Capitán, Francisco Javier Proof without words: tangents of 15 and 75 degrees. (English) Zbl 1443.97026 Coll. Math. J. 48, No. 1, 35 (2017). MSC: 97G60 51M04 PDF BibTeX XML Cite \textit{F. J. García Capitán}, Coll. Math. J. 48, No. 1, 35 (2017; Zbl 1443.97026) Full Text: DOI
Anghel, Nicolae Addendum to: “Concurrency and collinearity in hexagons”. (English) Zbl 1383.51010 J. Geom. Graph. 21, No. 1, 29-35 (2017). MSC: 51M04 97G60 51A05 51A45 51N15 PDF BibTeX XML Cite \textit{N. Anghel}, J. Geom. Graph. 21, No. 1, 29--35 (2017; Zbl 1383.51010) Full Text: Link
Andreescu, Titu; Crişan, Vlad 115 trigonometry problems from the AwesomeMath summer program. (English) Zbl 1403.97001 Allen, TX: XYZ Press (ISBN 978-0-9993428-0-0/hbk; 978-1-4704-4309-2/ebook). vi, 200 p. (2017). MSC: 97-01 97U40 00A07 51M04 97G60 00A35 PDF BibTeX XML Cite \textit{T. Andreescu} and \textit{V. Crişan}, 115 trigonometry problems from the AwesomeMath summer program. Allen, TX: XYZ Press (2017; Zbl 1403.97001)
Delbourgo, Roger Trigonometry. Notes, problems and exercises. (English) Zbl 1357.97002 Hackensack, NJ: World Scientific (ISBN 978-981-3207-10-3/hbk; 978-981-3203-11-2/pbk). xvi, 172 p. (2017). MSC: 97-01 97G60 00A35 PDF BibTeX XML Cite \textit{R. Delbourgo}, Trigonometry. Notes, problems and exercises. Hackensack, NJ: World Scientific (2017; Zbl 1357.97002) Full Text: DOI
Smýkalová, Radka Trigonometric functions in elementary mathematics. (Goniometrické funkce v elementární matematice.) (Czech) Zbl 1449.33001 Dějiny Matematiky / History of Mathematics 60. Prague: Matfyzpress (ISBN 978-80-7204-937-0). 237 p., open access (2016). Reviewer: Antonín Slavík (Praha) MSC: 33-01 33B10 01A05 97G60 PDF BibTeX XML Cite \textit{R. Smýkalová}, Goniometrické funkce v elementární matematice (Czech). Prague: Matfyzpress (2016; Zbl 1449.33001) Full Text: Link
Kowalski, Travis The sine of a single degree. (English) Zbl 1442.97021 Coll. Math. J. 47, No. 5, 322-332 (2016). MSC: 97G60 PDF BibTeX XML Cite \textit{T. Kowalski}, Coll. Math. J. 47, No. 5, 322--332 (2016; Zbl 1442.97021) Full Text: DOI
Molokach, John Proof without words: the product-to-sum identities. (English) Zbl 1442.97022 Coll. Math. J. 47, No. 3, 199 (2016). MSC: 97G60 PDF BibTeX XML Cite \textit{J. Molokach}, Coll. Math. J. 47, No. 3, 199 (2016; Zbl 1442.97022) Full Text: DOI
Ehrenborg, Richard; Klivans, Caroline; Reading, Nathan Coxeter arrangements in three dimensions. (English) Zbl 1352.52030 Beitr. Algebra Geom. 57, No. 4, 891-897 (2016). MSC: 52C35 51F15 20F55 97G60 PDF BibTeX XML Cite \textit{R. Ehrenborg} et al., Beitr. Algebra Geom. 57, No. 4, 891--897 (2016; Zbl 1352.52030) Full Text: DOI arXiv
Subramaniam, K. B. Proof without words: cotangent double angle identity. (English) Zbl 1406.97020 Coll. Math. J. 46, No. 2, 121 (2015). MSC: 97G60 51M04 PDF BibTeX XML Cite \textit{K. B. Subramaniam}, Coll. Math. J. 46, No. 2, 121 (2015; Zbl 1406.97020) Full Text: DOI
Nelsen, Roger B. Proof without words: a trigonometric identity for \(\sec x + \tan x\). (English) Zbl 1325.97010 Math. Mag. 88, No. 2, 151 (2015). MSC: 97G60 PDF BibTeX XML Cite \textit{R. B. Nelsen}, Math. Mag. 88, No. 2, 151 (2015; Zbl 1325.97010) Full Text: DOI
Lassak, Marek Width of spherical convex bodies. (English) Zbl 1319.52016 Aequationes Math. 89, No. 3, 555-567 (2015). MSC: 52A55 97G60 PDF BibTeX XML Cite \textit{M. Lassak}, Aequationes Math. 89, No. 3, 555--567 (2015; Zbl 1319.52016) Full Text: DOI
Withers, Christopher S.; Nadarajah, Saralees Products of sinusoids as sums of sinusoids. (English) Zbl 1317.97006 Int. J. Math. Educ. Sci. Technol. 46, No. 2, 311-319 (2015). MSC: 97I20 97G60 33B10 26A09 PDF BibTeX XML Cite \textit{C. S. Withers} and \textit{S. Nadarajah}, Int. J. Math. Educ. Sci. Technol. 46, No. 2, 311--319 (2015; Zbl 1317.97006) Full Text: DOI
Smarandache, Florentin Compiled and solved problems in geometry and trigonometry. 2nd revised ed. (Probleme de geometrie şi trigonometrie, compilate şi rezolvate.) (Romanian) Zbl 1307.00007 Chişinău: Univ. de Stat din Moldova, Catedra de Geometrie; Oradea: Societatea Cultural-Ştiinţifică AdSumus (ISBN 978-1-59973-325-8/pbk). 177 p. (2015). MSC: 00A07 00A35 97-01 97U40 97G40 97G60 PDF BibTeX XML Cite \textit{F. Smarandache}, Probleme de geometrie şi trigonometrie, compilate şi rezolvate (Romanian). 2nd revised ed. Chişinău: Univ. de Stat din Moldova, Catedra de Geometrie; Oradea: Societatea Cultural-Ştiinţifică AdSumus (2015; Zbl 1307.00007) Full Text: Link
Petrache, Horia I. Correspondence between geometric and differential definitions of the sine and cosine. (English) Zbl 1397.97014 Coll. Math. J. 45, No. 1, 11-15 (2014). MSC: 97G60 97I40 33B10 53A17 PDF BibTeX XML Cite \textit{H. I. Petrache}, Coll. Math. J. 45, No. 1, 11--15 (2014; Zbl 1397.97014) Full Text: DOI
Molokach, John Law of cosines – a proof without words. (English) Zbl 1310.97003 Am. Math. Mon. 121, No. 8, 722-722 (2014). MSC: 97G60 PDF BibTeX XML Cite \textit{J. Molokach}, Am. Math. Mon. 121, No. 8, 722--722 (2014; Zbl 1310.97003) Full Text: DOI
Volkert, Klaus Book review of: Alexander Ostermann and Gerhard Wanner, Geometry by its history. (German) Zbl 1302.00046 Math. Semesterber. 61, No. 1, 117-119 (2014). MSC: 00A17 51-01 51-03 01A05 97G40 97G60 51M04 51M15 51N10 51N15 PDF BibTeX XML Cite \textit{K. Volkert}, Math. Semesterber. 61, No. 1, 117--119 (2014; Zbl 1302.00046) Full Text: DOI
Jäger, Joachim; Kroll, Wolfgang; Schupp, Hans Paper foldings. (Blattfaltungen.) (German) Zbl 1297.97012 Math. Semesterber. 61, No. 1, 93-114 (2014). MSC: 97G40 97I40 97G60 97U60 51M04 PDF BibTeX XML Cite \textit{J. Jäger} et al., Math. Semesterber. 61, No. 1, 93--114 (2014; Zbl 1297.97012) Full Text: DOI
Smarandache, Florentin My high school math notebook, Vol. 2. (English) Zbl 1282.00001 Columbus, OH: Educational Publisher (ISBN 978-1-59973-261-9/hbk). 111 p. (2014). MSC: 00-01 00A05 00A22 97H10 97M10 97G60 PDF BibTeX XML Cite \textit{F. Smarandache}, My high school math notebook, Vol. 2. Columbus, OH: Educational Publisher (2014; Zbl 1282.00001) Full Text: Link
Schuppar, Berthold The ladder – an elementary-mathematical problem with numerous associations. (Die Leiter – ein beziehungsreiches elementarmathematisches Problem.) (German) Zbl 1335.97005 Int. Math. Nachr., Wien 222, 21-32 (2013). MSC: 97G60 51M04 PDF BibTeX XML Cite \textit{B. Schuppar}, Int. Math. Nachr., Wien 222, 21--32 (2013; Zbl 1335.97005)
Nelsen, Roger B. Proof without words: the formulas of Hutton and Strassnitzky. (English) Zbl 1293.97036 Math. Mag. 86, No. 5, 350 (2013). MSC: 97G60 PDF BibTeX XML Cite \textit{R. B. Nelsen}, Math. Mag. 86, No. 5, 350 (2013; Zbl 1293.97036) Full Text: DOI
Holland, Finbarr Over-constrained triangles. (English) Zbl 1291.97007 Ir. Math. Soc. Bull. 72, 79-83 (2013). MSC: 97G60 33B10 51M04 PDF BibTeX XML Cite \textit{F. Holland}, Ir. Math. Soc. Bull. 72, 79--83 (2013; Zbl 1291.97007)
Faĭziev, Valeriĭ; Powers, Robert; Sahoo, Prasanna When can one expect a stronger triangle inequality? (English) Zbl 1274.97022 Coll. Math. J. 44, No. 1, 24-31 (2013); correction ibid. 44, No. 5, 459 (2013). MSC: 97G40 97G60 51M04 51M16 52A22 97K60 PDF BibTeX XML Cite \textit{V. Faĭziev} et al., Coll. Math. J. 44, No. 1, 24--31 (2013; Zbl 1274.97022) Full Text: DOI
Smith, Karl J. Precalculus. A functional approach to graphing and problem solving. 6th ed. (English) Zbl 1274.97004 Burlington, MA: Jones & Bartlett Learning (ISBN 978-1-4496-4916-6/hbk). xxiii, 749 p. (2013). MSC: 97-01 97I20 97G60 97G70 97I30 97H60 PDF BibTeX XML Cite \textit{K. J. Smith}, Precalculus. A functional approach to graphing and problem solving. 6th ed. Burlington, MA: Jones \& Bartlett Learning (2013; Zbl 1274.97004)
Axler, Sheldon Precalculus. A prelude to calculus. With student solutions manual. 2nd ed. (English) Zbl 1269.97001 Hoboken, NJ: John Wiley & Sons (ISBN 978-0-470-64804-9/pbk; 978-1-118-08376-5/hbk; 978-1-118-54607-9/ebook). xxiii, 647 p. (2013). Reviewer: Mario Pennisi (Catania) MSC: 97-01 97I20 97I30 97F50 97G60 97H30 00A35 PDF BibTeX XML Cite \textit{S. Axler}, Precalculus. A prelude to calculus. With student solutions manual. 2nd ed. Hoboken, NJ: John Wiley \& Sons (2013; Zbl 1269.97001)
Chernetskaya, T. A. Complex numbers method in plane geometry training techniques at secondary school. (English) Zbl 1298.97059 Burenkov, V. I. (ed.) et al., Progress in analysis. Proceedings of the 8th congress of the International Society for Analysis, its Applications, and Computation (ISAAC), Moscow, Russia, August 22–27, 2011. Volume 3. Moscow: Peoples’ Friendship University of Russia (ISBN 978-5-209-04597-7/hbk). 217-220 (2012). MSC: 97G40 97G60 97F50 PDF BibTeX XML Cite \textit{T. A. Chernetskaya}, in: Progress in analysis. Proceedings of the 8th congress of the International Society for Analysis, its Applications, and Computation (ISAAC), Moscow, Russia, August 22--27, 2011. Volume 3. Moscow: Peoples' Friendship University of Russia. 217--220 (2012; Zbl 1298.97059)
Boute, Raymond T. The brachistochrone problem solved geometrically: a very elementary approach. (English) Zbl 1260.51008 Math. Mag. 85, No. 3, 193-199 (2012). MSC: 51P05 51M04 49K05 97M50 97G40 97G60 PDF BibTeX XML Cite \textit{R. T. Boute}, Math. Mag. 85, No. 3, 193--199 (2012; Zbl 1260.51008) Full Text: DOI
Frantz, Marc A different angle on perspective. (English) Zbl 1267.97008 Coll. Math. J. 43, No. 5, 354-360 (2012). MSC: 97G40 97G50 97G60 51M04 00A66 PDF BibTeX XML Cite \textit{M. Frantz}, Coll. Math. J. 43, No. 5, 354--360 (2012; Zbl 1267.97008) Full Text: DOI
Pop, Ovidiu T.; Bencze, Mihaly Trigonometrical identities and inequalities. (English) Zbl 1247.97025 J. Sci. Arts 11, No. 2, 151-162 (2012). MSC: 97G60 26D05 51M16 PDF BibTeX XML Cite \textit{O. T. Pop} and \textit{M. Bencze}, J. Sci. Arts 11, No. 2, 151--162 (2012; Zbl 1247.97025)
Liu, Jian On a geometric inequality of Oppenheim. (English) Zbl 1247.97024 J. Sci. Arts 12, No. 1, 5-12 (2012). MSC: 97G60 51M16 PDF BibTeX XML Cite \textit{J. Liu}, J. Sci. Arts 12, No. 1, 5--12 (2012; Zbl 1247.97024)
Packard, Erik; Reitenbach, Markus A generalization of the identity \(\cos \pi /3 = 1/2\). (English) Zbl 1246.97010 Math. Mag. 85, No. 2, 124-125 (2012). MSC: 97I30 97G60 PDF BibTeX XML Cite \textit{E. Packard} and \textit{M. Reitenbach}, Math. Mag. 85, No. 2, 124--125 (2012; Zbl 1246.97010) Full Text: DOI
Mueller, Nancy; Tikoo, Mohan; Wang, Haohao A note on Morley’s triangle theorem. (English) Zbl 1433.97003 Int. J. Math. Educ. Sci. Technol. 43, No. 4, 538-548 (2012). MSC: 97G40 51M04 97G60 PDF BibTeX XML Cite \textit{N. Mueller} et al., Int. J. Math. Educ. Sci. Technol. 43, No. 4, 538--548 (2012; Zbl 1433.97003) Full Text: DOI
Hoehn, Larry The isosceles trapezoid and its dissecting similar triangles. (English) Zbl 1251.51003 Forum Geom. 12, 29-38 (2012). MSC: 51M04 97G60 PDF BibTeX XML Cite \textit{L. Hoehn}, Forum Geom. 12, 29--38 (2012; Zbl 1251.51003) Full Text: Link
Goehl, John F. jun More integer triangles with \(R/r = N\). (English) Zbl 1251.51002 Forum Geom. 12, 27-28 (2012). MSC: 51M04 97G60 PDF BibTeX XML Cite \textit{J. F. j. Goehl}, Forum Geom. 12, 27--28 (2012; Zbl 1251.51002) Full Text: Link
Griffiths, Martin Is trigonometry the preserve of the mathematical élite? (English) Zbl 1383.97004 Math. Gaz. 95, No. 533, 256-261 (2011). MSC: 97G60 97H30 97D70 PDF BibTeX XML Cite \textit{M. Griffiths}, Math. Gaz. 95, No. 533, 256--261 (2011; Zbl 1383.97004) Full Text: DOI
Zhou, Yunming The review of Euclidean geometry and the multi-purpose graphics. (English) Zbl 1251.97008 Far East J. Math. Educ. 7, No. 2, 157-162 (2011). MSC: 97G40 97G60 PDF BibTeX XML Cite \textit{Y. Zhou}, Far East J. Math. Educ. 7, No. 2, 157--162 (2011; Zbl 1251.97008) Full Text: Link
Pop, Ovidiu T.; Minculete, Nicuşor; Bencze, Mihály Inequalities in triangle. (English) Zbl 1247.97026 J. Sci. Arts 11, No. 4, 377-382 (2011). MSC: 97G60 97H30 26D05 51M16 PDF BibTeX XML Cite \textit{O. T. Pop} et al., J. Sci. Arts 11, No. 4, 377--382 (2011; Zbl 1247.97026)
Bencze, Mihaly Generalization of Ptolemy’s theorems. (English) Zbl 1247.97022 J. Sci. Arts 11, No. 1, 45-48 (2011). MSC: 97G60 51M04 26D20 PDF BibTeX XML Cite \textit{M. Bencze}, J. Sci. Arts 11, No. 1, 45--48 (2011; Zbl 1247.97022)
Liu, Jian A new geometric inequality and its applications. (English) Zbl 1247.97023 J. Sci. Arts 11, No. 1, 5-12 (2011). MSC: 97G60 51M16 PDF BibTeX XML Cite \textit{J. Liu}, J. Sci. Arts 11, No. 1, 5--12 (2011; Zbl 1247.97023)
Dong, Jie A study on Xue Feng-zuo’s method to solve the spherical triangles. (Chinese. English summary) Zbl 1250.51010 J. Northwest Univ., Nat. Sci. Ed. 41, No. 4, 737-741 (2011). MSC: 51M04 97A30 97G60 PDF BibTeX XML Cite \textit{J. Dong}, J. Northwest Univ., Nat. Sci. Ed. 41, No. 4, 737--741 (2011; Zbl 1250.51010)
Krylov, Nikolai A.; Rogers, Edwin L. Folding noneuclidean strips of paper. (English) Zbl 1227.51020 Math. Mag. 84, No. 4, 289-294 (2011). MSC: 51M09 97G60 PDF BibTeX XML Cite \textit{N. A. Krylov} and \textit{E. L. Rogers}, Math. Mag. 84, No. 4, 289--294 (2011; Zbl 1227.51020) Full Text: DOI
Apostol, Tom M.; Mnatsakanian, Mamikon A. Ellipse to hyperbola: “With this string I thee wed”. (English) Zbl 1227.51012 Math. Mag. 84, No. 2, 83-97 (2011). MSC: 51M04 97G60 PDF BibTeX XML Cite \textit{T. M. Apostol} and \textit{M. A. Mnatsakanian}, Math. Mag. 84, No. 2, 83--97 (2011; Zbl 1227.51012) Full Text: DOI
Mabry, Rick Crosscut convex quadrilaterals. (English) Zbl 1227.51015 Math. Mag. 84, No. 1, 16-25 (2011). MSC: 51M04 97G60 PDF BibTeX XML Cite \textit{R. Mabry}, Math. Mag. 84, No. 1, 16--25 (2011; Zbl 1227.51015) Full Text: DOI
Zhao, Dongsheng Maximal outboxes of quadrilaterals. (English) Zbl 1273.97025 Int. J. Math. Educ. Sci. Technol. 42, No. 4, 534-540 (2011). MSC: 97G70 97G60 51M15 51M16 PDF BibTeX XML Cite \textit{D. Zhao}, Int. J. Math. Educ. Sci. Technol. 42, No. 4, 534--540 (2011; Zbl 1273.97025) Full Text: DOI
Vaninsky, Alexander Algebraic trigonometry. (English) Zbl 1273.97022 Int. J. Math. Educ. Sci. Technol. 42, No. 3, 406-411 (2011). MSC: 97G60 97H40 12F05 PDF BibTeX XML Cite \textit{A. Vaninsky}, Int. J. Math. Educ. Sci. Technol. 42, No. 3, 406--411 (2011; Zbl 1273.97022) Full Text: DOI
Bremigan, Elizabeth G.; Bremigan, Ralph J.; Lorch, John D. Mathematics for secondary school teachers. (English) Zbl 1272.97001 MAA Textbooks. Washington, DC: Mathematical Association of America (MAA) (ISBN 978-0-88385-773-1/hbk). xxiv, 417 p. (2011). MSC: 97-01 97B50 97I20 97G60 97F10 97H30 PDF BibTeX XML Cite \textit{E. G. Bremigan} et al., Mathematics for secondary school teachers. Washington, DC: Mathematical Association of America (MAA) (2011; Zbl 1272.97001)
Gustafson, Karl Trigonometry of quantum states. (English) Zbl 1211.81024 Found. Phys. 41, No. 3, 450-465 (2011). MSC: 81P16 81P40 97G60 PDF BibTeX XML Cite \textit{K. Gustafson}, Found. Phys. 41, No. 3, 450--465 (2011; Zbl 1211.81024) Full Text: DOI
Alves, Flávio Antonio An interesting proof of Heron’s formula. (Portuguese. English summary) Zbl 1278.97012 Lect. Mat. 31, No. 2, 149-151 (2010). MSC: 97G60 51M05 PDF BibTeX XML Cite \textit{F. A. Alves}, Lect. Mat. 31, No. 2, 149--151 (2010; Zbl 1278.97012)
Kim, Boo Yoon; Chung, Young Woo Exploring the mathematization of trigonometric functions. (Korean. English summary) Zbl 1267.00013 East Asian Math. J. 26, No. 4, 487-507 (2010). MSC: 00A35 97G60 97C30 PDF BibTeX XML Cite \textit{B. Y. Kim} and \textit{Y. W. Chung}, East Asian Math. J. 26, No. 4, 487--507 (2010; Zbl 1267.00013) Full Text: DOI
Hajja, Mowaffaq Another morsel of Honsberger. (English) Zbl 1227.51014 Math. Mag. 83, No. 4, 279-283 (2010). MSC: 51M04 97G60 PDF BibTeX XML Cite \textit{M. Hajja}, Math. Mag. 83, No. 4, 279--283 (2010; Zbl 1227.51014) Full Text: DOI
Kodokostas, Dimitrios Triangle equalizers. (English) Zbl 1227.97022 Math. Mag. 83, No. 2, 141-146 (2010). MSC: 97G60 PDF BibTeX XML Cite \textit{D. Kodokostas}, Math. Mag. 83, No. 2, 141--146 (2010; Zbl 1227.97022) Full Text: DOI
Barroso Campos, Ricardo The geometry of the triangle, the software for dynamic geometry and the Internet: a potential integration. (Spanish) Zbl 1293.97025 Gac. R. Soc. Mat. Esp. 13, No. 3, 557-569 (2010). MSC: 97G40 97G60 97U70 PDF BibTeX XML Cite \textit{R. Barroso Campos}, Gac. R. Soc. Mat. Esp. 13, No. 3, 557--569 (2010; Zbl 1293.97025)
Langer, Joel C.; Singer, David A. When is a curve an octahedron? (English) Zbl 1206.53006 Am. Math. Mon. 117, No. 10, 889-902 (2010). MSC: 53A04 53A20 97G60 PDF BibTeX XML Cite \textit{J. C. Langer} and \textit{D. A. Singer}, Am. Math. Mon. 117, No. 10, 889--902 (2010; Zbl 1206.53006) Full Text: DOI
Mazer, Arthur The ellipse. A historical and mathematical journey. (English) Zbl 1213.00010 Hoboken, NJ: John Wiley & Sons (ISBN 978-0-470-58718-8/pbk). xi, 303 p. (2010). Reviewer: Roman Duda (Wrocław) MSC: 00A05 51N10 97G40 97G60 97G70 00A09 01A40 01A45 97-01 97-03 PDF BibTeX XML Cite \textit{A. Mazer}, The ellipse. A historical and mathematical journey. Hoboken, NJ: John Wiley \& Sons (2010; Zbl 1213.00010)
Berrone, Lucio R. The associativity of the Pythagorean law. (English) Zbl 1229.51017 Am. Math. Mon. 116, No. 10, 936-939 (2009). MSC: 51M04 97G60 PDF BibTeX XML Cite \textit{L. R. Berrone}, Am. Math. Mon. 116, No. 10, 936--939 (2009; Zbl 1229.51017) Full Text: DOI
Richmond, Bettina; Richmond, Tom How to recognize a parabola. (English) Zbl 1229.26006 Am. Math. Mon. 116, No. 10, 910-922 (2009). MSC: 26A06 51M04 97G70 97G60 PDF BibTeX XML Cite \textit{B. Richmond} and \textit{T. Richmond}, Am. Math. Mon. 116, No. 10, 910--922 (2009; Zbl 1229.26006) Full Text: DOI
Lee, Hojoo Ptolemy meets Erdős and Mordell again. (English) Zbl 1229.51020 Am. Math. Mon. 116, No. 8, 738-742 (2009). MSC: 51M04 97G60 26D15 PDF BibTeX XML Cite \textit{H. Lee}, Am. Math. Mon. 116, No. 8, 738--742 (2009; Zbl 1229.51020) Full Text: DOI
Feldman, David V.; Klain, Daniel A. Angles as probabilities. (English) Zbl 1229.60013 Am. Math. Mon. 116, No. 8, 732-735 (2009). MSC: 60D05 97K50 97G40 97G60 52A99 PDF BibTeX XML Cite \textit{D. V. Feldman} and \textit{D. A. Klain}, Am. Math. Mon. 116, No. 8, 732--735 (2009; Zbl 1229.60013) Full Text: DOI arXiv
Troubetzkoy, Serge Dual billiards, Fagnano orbits, and regular polygons. (English) Zbl 1229.37033 Am. Math. Mon. 116, No. 3, 251-260 (2009). MSC: 37D50 51M04 97G60 97I99 PDF BibTeX XML Cite \textit{S. Troubetzkoy}, Am. Math. Mon. 116, No. 3, 251--260 (2009; Zbl 1229.37033) Full Text: DOI
Kocik, Jerzy; Solecki, Andrzej Disentangling a triangle. (English) Zbl 1229.51019 Am. Math. Mon. 116, No. 3, 228-237 (2009). MSC: 51M04 51M25 97G60 PDF BibTeX XML Cite \textit{J. Kocik} and \textit{A. Solecki}, Am. Math. Mon. 116, No. 3, 228--237 (2009; Zbl 1229.51019) Full Text: DOI
Nelsen, Roger B. Proof without words: a reciprocal Pythagorean theorem. (English) Zbl 1227.97023 Math. Mag. 82, No. 5, 370 (2009). MSC: 97G60 PDF BibTeX XML Cite \textit{R. B. Nelsen}, Math. Mag. 82, No. 5, 370 (2009; Zbl 1227.97023) Full Text: DOI
Deshpande, M. N. Proof without words: beyond extriangles. (English) Zbl 1227.97021 Math. Mag. 82, No. 3, 208 (2009). MSC: 97G60 51M04 PDF BibTeX XML Cite \textit{M. N. Deshpande}, Math. Mag. 82, No. 3, 208 (2009; Zbl 1227.97021) Full Text: DOI
Rashed, Roshdi Geometrical lemmas of Thābit ibn Qurra. (Lemmes géométriques de Thābit ibn Qurra.) (French) Zbl 1229.51002 Rashed, Roshdi (ed.), Thābit ibn Qurra. Science and philosophy in ninth-century Baghdad. Papers from the international conference marking the eleven hundredth anniversary of the death of Thābit ibn Qurra, London, UK, November 2–3, 2001. Berlin: Walter de Gruyter (ISBN 978-3-11-022078-0/hbk). Scientia Graeco-Arabica 4, 211-253 (2009). Reviewer: Mowaffaq Hajja (Irbid) MSC: 51-03 01A30 51M04 51M15 51-01 97A30 97G60 PDF BibTeX XML Cite \textit{R. Rashed}, Sci. Graeco-Arabica 4, 211--253 (2009; Zbl 1229.51002)
Lévy-Leblond, Jean-Marc The most arbitrary triangle. (Le triangle le plus quelconque.) (French) Zbl 1175.51010 Quadrature 73, 9-15 (2009). MSC: 51M04 97G60 PDF BibTeX XML Cite \textit{J.-M. Lévy-Leblond}, Quadrature 73, 9--15 (2009; Zbl 1175.51010) Full Text: DOI
Ovsienko, Valentin; Tabachnikov, Sergei What is.. the Schwarzian derivative? (English) Zbl 1176.53002 Notices Am. Math. Soc. 56, No. 1, 34-36 (2009). Reviewer: Hubert Gollek (Berlin) MSC: 53-01 53A20 53A55 97G60 PDF BibTeX XML Cite \textit{V. Ovsienko} and \textit{S. Tabachnikov}, Notices Am. Math. Soc. 56, No. 1, 34--36 (2009; Zbl 1176.53002) Full Text: Link
Ecker, Michael W. Linking all Pythagorean triples. (English) Zbl 1256.97002 Math. Comput. Educ. 42, No. 3, 238-248 (2008). MSC: 97F60 97G60 11D09 51M04 PDF BibTeX XML Cite \textit{M. W. Ecker}, Math. Comput. Educ. 42, No. 3, 238--248 (2008; Zbl 1256.97002)
Alsina, Claudi; Nelsen, Roger B. Geometric proofs of the Weitzenböck and Hadwiger-Finsler inequalities. (English) Zbl 1223.51019 Math. Mag. 81, No. 3, 216-219 (2008). MSC: 51M04 97G60 PDF BibTeX XML Cite \textit{C. Alsina} and \textit{R. B. Nelsen}, Math. Mag. 81, No. 3, 216--219 (2008; Zbl 1223.51019) Full Text: DOI
Feng, Zuming Why are the Gergonne and Soddy lines perpendicular? A synthetic approach. (English) Zbl 1223.51022 Math. Mag. 81, No. 3, 211-214 (2008). MSC: 51M04 97G60 PDF BibTeX XML Cite \textit{Z. Feng}, Math. Mag. 81, No. 3, 211--214 (2008; Zbl 1223.51022) Full Text: DOI
Garibaldi, Skip Somewhat more than governors need to know about trigonometry. (English) Zbl 1223.51023 Math. Mag. 81, No. 3, 191-200 (2008). MSC: 51M04 97G60 PDF BibTeX XML Cite \textit{S. Garibaldi}, Math. Mag. 81, No. 3, 191--200 (2008; Zbl 1223.51023) Full Text: DOI
Beauregard, Raymond A. The class of Heron triangles. (English) Zbl 1223.51020 Math. Mag. 81, No. 4, 300-301 (2008). MSC: 51M04 11D61 97F60 97G60 PDF BibTeX XML Cite \textit{R. A. Beauregard}, Math. Mag. 81, No. 4, 300--301 (2008; Zbl 1223.51020) Full Text: DOI
Weiss, Gunter; Gruber, Franz How to generalize Thales’s theorem? (Den Satz von Thales verallgemeinern – aber wie?) (German. English summary) Zbl 1192.00035 KoG 12, 7-18 (2008). MSC: 00A35 51M05 97G60 PDF BibTeX XML Cite \textit{G. Weiss} and \textit{F. Gruber}, KoG 12, 7--18 (2008; Zbl 1192.00035)
Rodionov, M.; Velmisova, S. Construction of mathematical problems by students themselves. (English) Zbl 1177.00086 Todorov, Michail D. (ed.), Applications of mathematics in engineering and economics ’34. Proceedings of the 34th international conference (AMEE ’08), Sozopol, Bulgaria, 8–14 June 2008. Melville, NY: American Institute of Physics (AIP) (ISBN 978-0-7354-0598-1/hbk). AIP Conference Proceedings 1067, 221-228 (2008). MSC: 00A35 97E50 97G60 PDF BibTeX XML Cite \textit{M. Rodionov} and \textit{S. Velmisova}, AIP Conf. Proc. 1067, 221--228 (2008; Zbl 1177.00086) Full Text: DOI
Vautaw, William R. Two problems with table saws. (English) Zbl 1293.97038 Coll. Math. J. 39, No. 2, 121-128 (2008). MSC: 97G70 97G60 97I40 51M99 26A03 PDF BibTeX XML Cite \textit{W. R. Vautaw}, Coll. Math. J. 39, No. 2, 121--128 (2008; Zbl 1293.97038) Full Text: DOI
Dickinson, William; Salmassi, Mohammad The right right triangle on the sphere. (English) Zbl 1293.97034 Coll. Math. J. 39, No. 1, 24-33 (2008). MSC: 97G60 97G40 51M04 PDF BibTeX XML Cite \textit{W. Dickinson} and \textit{M. Salmassi}, Coll. Math. J. 39, No. 1, 24--33 (2008; Zbl 1293.97034) Full Text: DOI
Osler, T. J. A simple geometric method of estimating the error in using Vieta’s product for \(\pi\). (English) Zbl 1264.97006 Int. J. Math. Educ. Sci. Technol. 38, No. 1, 136-142 (2007). MSC: 97G60 97G40 97N20 51M04 65D99 65G50 PDF BibTeX XML Cite \textit{T. J. Osler}, Int. J. Math. Educ. Sci. Technol. 38, No. 1, 136--142 (2007; Zbl 1264.97006) Full Text: DOI
Adrian, Y. E. O. Trig or treat. An encyclopedia of trigonometric identity proofs (TIPs), intellectually challenging games. (English) Zbl 1364.00012 Hackensack, NJ: World Scientific (ISBN 978-981-277-618-1/hbk; 978-981-277-619-8/pbk; 978-981-277-620-4/ebook). xiv, 399 p. (2007). MSC: 00A08 97-00 97G60 00A35 PDF BibTeX XML Cite \textit{Y. E. O. Adrian}, Trig or treat. An encyclopedia of trigonometric identity proofs (TIPs), intellectually challenging games. Hackensack, NJ: World Scientific (2007; Zbl 1364.00012) Full Text: DOI
Seiple, Derek; Boman, Eugene; Brazier, Richard Mom! There’s an astroid in my closet! (English) Zbl 1227.51022 Math. Mag. 80, No. 2, 104-111 (2007). MSC: 51N20 97G60 PDF BibTeX XML Cite \textit{D. Seiple} et al., Math. Mag. 80, No. 2, 104--111 (2007; Zbl 1227.51022) Full Text: DOI
Nelsen, Roger B. Proof without words: the area of a right triangle. (English) Zbl 1227.97024 Math. Mag. 80, No. 1, 45 (2007). MSC: 97G60 PDF BibTeX XML Cite \textit{R. B. Nelsen}, Math. Mag. 80, No. 1, 45 (2007; Zbl 1227.97024) Full Text: DOI
Muktibodh, A. S.; Mohgaonkar, S. D.; Datta, Ushri Algebra and trigonometry. (English) Zbl 1326.97001 New Delhi: PHI Learning (ISBN 81-203-2974-0/pbk+ebook). 352 p. (2006). MSC: 97-01 00A05 15-01 51-01 97H60 97G60 97H40 PDF BibTeX XML Cite \textit{A. S. Muktibodh} et al., Algebra and trigonometry. New Delhi: PHI Learning (2006; Zbl 1326.97001)
Fakler, Robert A carpenter’s rule of thumb. (English) Zbl 1293.97035 Math. Mag. 78, No. 2, 144-146 (2005). MSC: 97G60 51M04 PDF BibTeX XML Cite \textit{R. Fakler}, Math. Mag. 78, No. 2, 144--146 (2005; Zbl 1293.97035) Full Text: DOI
Brooks, Jeff; Strantzen, John Spherical triangles of area \(\pi\) and isosceles tetrahedra. (English) Zbl 1273.97021 Math. Mag. 78, No. 4, 311-314 (2005). MSC: 97G60 PDF BibTeX XML Cite \textit{J. Brooks} and \textit{J. Strantzen}, Math. Mag. 78, No. 4, 311--314 (2005; Zbl 1273.97021) Full Text: DOI
Bartolini Bussi, Maria G. The geometry of drawing instruments. (Italian) Zbl 1178.51002 Ricordando Franco Conti. Pisa: Scuola Normale Superiore (ISBN 88-7642-137-8/pbk). Pubblicazioni del Centro di Ricerca Matematica Ennio de Giorgi, 31-48 (2004). MSC: 51-03 01A05 97G60 PDF BibTeX XML Cite \textit{M. G. Bartolini Bussi}, in: Ricordando Franco Conti. Pisa: Scuola Normale Superiore. 31--48 (2004; Zbl 1178.51002)
Riahi, F. An early iterative method for the determination of \(\sin 1°\). (English) Zbl 1291.01004 Coll. Math. J. 26, No. 1, 16-21 (1995). MSC: 01A30 97G60 PDF BibTeX XML Cite \textit{F. Riahi}, Coll. Math. J. 26, No. 1, 16--21 (1995; Zbl 1291.01004) Full Text: DOI
Novoselov, S. I. Spezialkurs der Trigonometrie. (Russian) Zbl 0052.29501 Moskau: Staatsverlag “Sowjetische Wissenschaft” 464 S. (1953). Reviewer: W. Burau MSC: 33-01 33B10 26D05 97G60 86A30 PDF BibTeX XML
Rabe, Joseph L. Spherical polygonometry. (Sphärische Polygonometrie.) (German) ERAM 002.0042cj J. Reine Angew. Math. 2, 9-21 (1827). Reviewer: Franz Lemmermeyer (Jagstzell) (2015) MSC: 97G60 PDF BibTeX XML Cite \textit{J. L. Rabe}, J. Reine Angew. Math. 2, 9--21 (1827; Zbl 002.0042cj) Full Text: DOI EuDML
Steiner, J. Transformation and division of spherical figures by construction. (Verwandlung und Theilung sphärischer Figuren durch Construction.) (German) ERAM 002.0045cj J. Reine Angew. Math. 2, 45-63 (1827). Reviewer: Franz Lemmermeyer (Jagstzell) (2015) MSC: 97G60 PDF BibTeX XML Cite \textit{J. Steiner}, J. Reine Angew. Math. 2, 45--63 (1827; Zbl 002.0045cj) Full Text: DOI EuDML
Steiner, J. Geometric theorems. (Geometrische Lehrsätze.) (German) ERAM 002.0055cj J. Reine Angew. Math. 2, 190-193 (1827). Reviewer: Franz Lemmermeyer (Jagstzell) (2015) MSC: 97G60 PDF BibTeX XML Cite \textit{J. Steiner}, J. Reine Angew. Math. 2, 190--193 (1827; Zbl 002.0055cj) Full Text: DOI EuDML