Mathematics, 26.07.2019 11:10 denaeyafranklin8430

Which of the following is an identity? a. sinx - cosx + 1 = tanx b. (1 - 2sin^2x)csc^2 x = 4cos2x - 2 c. sin^2xcot^2x + cos^2xtan^2x = 1 d. tan^2x + cot^2x = 1

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Which of the following is an identity? a. sinx - cosx + 1 = tanx b. (1 - 2sin^2x)csc^2 x = 4cos2x...

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