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The value of [cos (A-B) cos (A+B) -sin (...

The value of `[cos (A-B) cos (A+B) -sin (A-B) sin (A+B)]` is-

A

`2 sin A cos B`

B

`2 cos A cos B`

C

`cos 2B`

D

`cos 2A`

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The correct Answer is:
D
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