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If cos(A+B+C)=cos A cos B cos C, then (8...

If `cos(A+B+C)=cos A cos B cos C`, then `(8sin(B+C)sin(C+A)sin(A+B))/(sin2A sin 2B sin 2C)=`

A

1

B

`-1`

C

`1//2`

D

`-1//2`

Text Solution

Verified by Experts

The correct Answer is:
B
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