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The College Mathematics Journal Volume 55, 2024 - Issue 1
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Research Article

Exact Expressions for Trigonometric Functions

S H Sathish IndikaView further author information
&
Lawrence M. LeemisView further author information
Pages 40-45 | Received 20 Sep 2021, Accepted 19 Jul 2023, Published online: 21 Aug 2023

References

  • Bradie, B. (2002). Exact values for the sine and cosine of multiples of 18°: a geometric approach. Coll. Math. J 33(4): 318–319. DOI: 10.2307/1559057.
  • Dunham, W. (1990). Journey through Genius: The Great Theorems of Mathematics. New York: Penguin.
  • Irving, R. (2013). Beyond the Quadratic Formula. Washington, DC: MAA Press.
  • Kowalski, T. (2016). The sine of a single degree. Coll. Math. J 47(5): 322–332. DOI: 10.4169/college.math.j.47.5.322.

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