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Mathematics 17 Online
OpenStudy (anonymous):

Which of the following is an identity? A. secx tanx - cosx cotx = sinx B. cosx(2sinx + 1) = 0 C. (tanx + cotx)(sinx cosx) = 1 D. sin^2 x = 4 - 2cos^2 x

OpenStudy (anonymous):

a

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