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OpenStudy (anonymous):
Which of the following is not an identity? A: (cosx+sinx)^2=1+2cosx sinx B:1+cos^2x/sin^2=1 C:tan^2x=sec^2x-sin^2x-cos^2x D: (tanx+cotx)^2=csc^2x+sec^2x
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OpenStudy (loser66):
B
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