Approximating cosine and sine functions numerically
01 Mar 2018 | Contributor(s):: Hans Rudolf Schneebeli
Abstract:How can function values for sine or cosine be quickly and reliably numerically estimated? We consider equal circular motions on the unit circle in the complex plane and find sine and cosine as solutions of a differential equation. The two functions can be numerically approximated...
08 Sep 2017 | Contributor(s):: Brian Winkel
Wood, W. 2011. Squigonometry. Mathematics Magazine. 84(4): 257-265.The differential equations used to define a unit circle, namely x’(t) = - y(t), y’(t) = (t), x(0) =...