Editing Trigonometric functions (section)

==References==
{{refbegin}}
* {{AS ref}}
* [[Lars Ahlfors]], ''Complex Analysis: an introduction to the theory of analytic functions of one complex variable'', second edition, [[McGraw-Hill Book Company]], New York, 1966.
* {{cite book |last1=Bartle |first1=Robert G. |last2=Sherbert |first2=Donald R. |author-link1=Robert G. Bartle |title=Introduction to Real Analysis |year=1999 |edition=3rd |publisher=Wiley |isbn=9780471321484}}
* [[Carl Benjamin Boyer|Boyer, Carl B.]], ''A History of Mathematics'', John Wiley & Sons, Inc., 2nd edition. (1991). {{isbn|0-471-54397-7}}.
* {{cite book |last=Cajori |first=Florian |author-link=Florian Cajori |title=A History of Mathematical Notations |volume=2 |publisher=Open Court |year=1929 |chapter=§2.2.1. Trigonometric Notations |pages=142–179 (¶511–537) |chapter-url=https://archive.org/details/b29980343_0002/page/142/}}
* Gal, Shmuel and Bachelis, Boris. An accurate elementary mathematical library for the IEEE floating point standard, ACM Transactions on Mathematical Software (1991).
* Joseph, George G., ''The Crest of the Peacock: Non-European Roots of Mathematics'', 2nd ed. [[Penguin Books]], London. (2000). {{isbn|0-691-00659-8}}.
* Kantabutra, Vitit, "On hardware for computing exponential and trigonometric functions," ''IEEE Trans. Computers'' '''45''' (3), 328–339 (1996).
* Maor, Eli, ''[https://web.archive.org/web/20040404234808/http://www.pupress.princeton.edu/books/maor/ Trigonometric Delights]'', Princeton Univ. Press. (1998). Reprint edition (2002): {{isbn|0-691-09541-8}}.
* Needham, Tristan, [https://web.archive.org/web/20040602145226/http://www.usfca.edu/vca/PDF/vca-preface.pdf "Preface"]" to ''[http://www.usfca.edu/vca/ Visual Complex Analysis]''. Oxford University Press, (1999). {{isbn|0-19-853446-9}}.
* {{citation |last1=Nielsen |first1=Kaj L. |title=Logarithmic and Trigonometric Tables to Five Places |edition=2nd |location=New York|publisher=[[Barnes & Noble]] |date=1966 |lccn=61-9103}}
* O'Connor, J. J., and E. F. Robertson, [https://web.archive.org/web/20130120084848/http://www-gap.dcs.st-and.ac.uk/~history/HistTopics/Trigonometric_functions.html "Trigonometric functions"], ''[[MacTutor History of Mathematics archive]]''. (1996).
* O'Connor, J. J., and E. F. Robertson, [http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Madhava.html "Madhava of Sangamagramma"], ''[[MacTutor History of Mathematics archive]]''. (2000).
* Pearce, Ian G., [http://www-history.mcs.st-andrews.ac.uk/history/Projects/Pearce/Chapters/Ch9_3.html "Madhava of Sangamagramma"] {{Webarchive|url=https://web.archive.org/web/20060505201342/http://www-history.mcs.st-andrews.ac.uk/history/Projects/Pearce/Chapters/Ch9_3.html |date=2006-05-05 }}, ''[[MacTutor History of Mathematics archive]]''. (2002).
* {{ citation | last1 = Protter | first1 = Murray H. | last2 = Morrey | first2 = Charles B. Jr. | year = 1970 | lccn = 76087042 | title = College Calculus with Analytic Geometry | edition = 2nd | publisher = [[Addison-Wesley]] | location = Reading }}
* Weisstein, Eric W., [http://mathworld.wolfram.com/Tangent.html "Tangent"] from ''[[MathWorld]]'', accessed 21 January 2006.
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