Cosine

From JSXGraph Wiki
Revision as of 13:07, 6 March 2016 by Bookofproofs (talk | contribs)
The printable version is no longer supported and may have rendering errors. Please update your browser bookmarks and please use the default browser print function instead.

Geometrically, the cosine is a projection of the complex number exp(−ix) to the real axis. The behavior of the cosine function can be studied in the following interactive figure, where you can drag the point x and observe the behaviour of the complex number exp(−ix) and the value of cosine(x).

Cosine Unit Circle on the Complex Plane

read more about cosine on Bookofproofs