Difference between revisions of "Trigonometric identities"

(Add link to trigonometry)
(Trig substitution)
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==See also==
 
==See also==
 
* [[Trigonometry]]
 
* [[Trigonometry]]
 +
* [[Trigonometric substitution]]

Revision as of 18:36, 22 June 2006

Trigonometric identities are used to manipulate trig equations in certain ways. Here is a list of them:


  • $\displaystyle \sin^2x + \cos^2x = 1$
  • $|1-e^{i\theta}|=2\sin\frac{\theta}{2}$

This page is incomplete--if you know of a trigonometric identity, add it.

See also