Homework Help: Trigonometry

Posted by Karth on Tuesday, December 16, 2008 at 1:53am.

Does anyone have a good website that shows the proofs for these equations?
sin(u+v) = sin(u)cos(v) + sin(v)cos(u)
cos(u+v) = cos(u)cos(v) + sin(v)sin(u)

Thanks!

Trigonometry - Damon, Tuesday, December 16, 2008 at 3:10am
http://www.youtube.com/watch?v=zw0waJCEc-w

http://www.youtube.com/watch?v=V3-xCPDzQ1Q

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