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August 29, 2015

Homework Help: Trigonometry

Posted by Rick on Sunday, June 26, 2011 at 8:17pm.

I need help proving the following identity:
4(sin^6(x)+cos^6(x)) = 4-3sin^2(2x)
I am completely lost, if anybody can please give me a step-by-step guide to figuring this out, I would be forever grateful!!

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