Difference between revisions of "Trigonometric identities"

(\sin and \cos, not sin and cos in LaTeX)
Line 3: Line 3:
  
 
<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>
  
 
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.