Art of Problem Solving

Trigonometric identities: Difference between revisions

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<math>\sin^2x + \cos^2x = 1</math>
*<math>\sin^2x + \cos^2x = 1</math>
<math>|1-e^{i\theta}|=2\sin\frac{\theta}{2}</math>
*<math>|1-e^{i\theta}|=2\sin\frac{\theta}{2}</math>


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

Revision as of 21:58, 21 June 2006

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


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

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