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Mathematics 7 Online
anarchysnake69:

Which of the following is an identity? A. sinx - cosx + 1 = tanx B. (1 - 2sin2x)csc2x = 4cos2x - 2 C. sin2x cot2x + cos2x tan2x = 1 D. tan2x + cot2x = 1

KjSaif:

C. sin2x cot2x + cos2x tan2x = 1

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