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September 19, 2014

Homework Help: Trigonometry Help

Posted by Anonymous on Tuesday, February 21, 2012 at 3:31pm.

Simplify:
sin(x-y)cosy+cos(x-y)siny
= (sinxcosy-cosxsiny)cosy+(cosxcosy+sinxsiny)siny
= ???

What do I do next???


Please Help and Thank You

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