Mathematics, 11.10.2019 16:30, Mikec123

Which of the following are identities? 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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Which of the following are identities? a) sin^2x - cos^2x = 1 . b) sin^2x = 1 - cos^2x . c) tan^2x...