Difference between revisions of "Cosine"
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| − | + | 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). | |
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[[Category:Contributions]] | [[Category:Contributions]] | ||
| + | [[Category:Examples]] | ||
[http://www.bookofproofs.org/branches/cosine/ read more about cosine on Bookofproofs] | [http://www.bookofproofs.org/branches/cosine/ read more about cosine on Bookofproofs] | ||
Latest revision as of 15:21, 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 |
