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OpenStudy (anonymous):
Need HELP!! Which of the following are identities? Check all that apply. A. sin x +sin 5x = tan3x B. (sin x + cos x)^2= 1+ sin2x C. cos^2 3x- sin^2 3x= cos6x D. sin^6 x+ cos^6 x= 4-3 sin^2 2x
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