# Difference between revisions of "Cosine"

From JSXGraph Wiki

Jump to navigationJump to searchBookofproofs (talk | contribs) |
Bookofproofs (talk | contribs) |
||

Line 1: | Line 1: | ||

− | The cosine is a projection of the complex number exp(−ix) | + | The cosine is a projection of the complex number exp(−ix) (which is a point on the unit circle in the complex plane) to the real axis on the complex plane. In the following interactive figure, you can drag the point x on the real axis and observe the behaviour of the complex number exp(−ix) and the varying value of cosine(x). |

{| | {| |

## Latest revision as of 14:21, 6 March 2016

The cosine is a projection of the complex number exp(−ix) (which is a point on the unit circle in the complex plane) to the real axis on the complex plane. In the following interactive figure, you can drag the point x on the real axis and observe the behaviour of the complex number exp(−ix) and the varying value of cosine(x).

Cosine | Unit Circle on the Complex Plane |