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If x=cos(A+B)cos(A-B) and y=sin (A+B)sin...

If `x=cos(A+B)cos(A-B)` and `y=sin (A+B)sin (A-B)` then `x-y=`

A

sin 2A

B

cos 2A

C

sin 2B

D

cos 2B

Text Solution

Verified by Experts

The correct Answer is:
B
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  6. sin (A+B) * sin (A-B)=

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