Prove cos (x - n) = - cOS X.

cos (x - 7) = cos x sin n - sin x cos n = - cos X

cos (x - n) = cos x cos n - sin x sin n = - cos X

cos (x - n = cos x sinn + sin x cos n = - cos X

cos (x - n) = cos x cos n + sin x sin n = - cos x

Question

17 January, 10:48

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Ashleigh Holder · Answer 1

Answer B

Step-by-step explanation:

cos n + x = cos x + y

Prove cos (x - n) = - cOS X.cos (x - 7) = cos x sin n - sin x cos n = - cos Xcos (x - n) = cos x cos n - sin x sin n = - cos Xcos (x - n = cos x sinn + sin x cos n = - cos Xcos (x - n) = cos x cos n + sin x sin n = - cos x