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I have been trying to do this problem for a long time, and still can not do it. I know the answer is sin2x, but I have no idea how to do it:
write expression as sine, cosine, or tangent of an angle
sin3xcosx - cos3xsinx
THANKS!
write expression as sine, cosine, or tangent of an angle
sin3xcosx - cos3xsinx
THANKS!