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Mathematics 14 Online
OpenStudy (anonymous):

Which of the following are identities? Check all that apply. A. (sinx-cosx)^2=1+sin2x B. sin8x=2sin4xcos4x C. (1-tan^2x/2tanx)=1/tan2x D. (sinx+sin5x/cosx+cos5x)=tan3x

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