If alpha+beta-gamma=pi, then sin^2 alpha...

If `alpha+beta-gamma=pi`, then `sin^2 alpha beta- sin^2 gamma` is equal to

A

`2 sin alpha sin beta cos gamma`

B

`2 cos alpha cos beta cos gamma`

C

`2 sin alpha sin beta sin gamma`

D

None of these

Verified by Experts

The correct Answer is:

A

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