cos(4x) cos(2x) sin(4x) sec(2x) 12. Verify: - sin(2x)

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A: Please see the explanation below.

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A:

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A: A

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A:

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A: Here we use formula of trigonometric equation.

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A:

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A: We have to prove that  (Sinx+cosx)^2=sin(2x)+1

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A: ∫cos26x+sin6x-sin36x12 dx=∫cos26x+sin6x1-sin26x12 dx=∫cos26x+sin6xcos26x12 dx…

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