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12 January, 09:22

Which of the following are identities? Check all that apply. A. sin^2x - cos^2x = 1 B. sin^2x = 1 - cos^2x C. tan^2x = 1 + sec^2x D. cot^2x = csc^2x - 1

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  1. 12 January, 12:30
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    Hey! The correct identities are: 1 + tan^2x = sec^2x 1 + cot^2x = csc^2x sin^2x + cos^2x = 1 which correspond to B and D
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