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OpenStudy (anonymous):
Rewrite with only sin x and cos x. cos 3x A) cos x - 4 cos x sin2x B) -sin3x + 2 sin x cos x C) -sin2x + 2 sin x cos x D) 2 sin2x cos x - 2 sin x cos x
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OpenStudy (anonymous):
you fine tho
OpenStudy (dan815):
|dw:1372106997396:dw|
OpenStudy (dan815):
trig iddentity
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