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31-88 Proving Identities Verify the identity. sin 0 = cos 0 tan x 31. 32. tan = sin x sec x cos u sec

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31-88 Proving Identities Verify the identity. sin 0 = cos 0 tan x 31. 32. tan = sin x sec x cos u sec u 33. = cot u 34. cot x sec x tan u = 1 CSC X tan y 1 1 COS v 35. 36. csc y cos y sec y sin v = CSC v sin L 37.) cos(x)-sin(x) = cos x + sin x 38. cot(-a) cos(-a) + sin(-a) = - csc a 39. tan +cot 0 = sec 0 csc 0 40. (sin x cos x) = 1 + 2 sin x cos x

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