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October 25, 2014

Homework Help: pre-calculus help:((((((((

Posted by Katy on Monday, April 23, 2012 at 12:40pm.

how do u find period, all angles and name 8 angles for these????????
1)cosxcos2x+sinxsin2x=sqrt(2)/2
2)5cosxsinx+2cosx=0

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