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In DeltaABC,2ac" sin "(A-B+C)/(2) is eq...

In `DeltaABC,2ac" sin "(A-B+C)/(2)` is equal to

A

`a^(2) + b^(2) - c^(2)`

B

`c^(2) + a^(2) - b^(2)`

C

`b^(2) - c^(2) - a^(2)`

D

`c^(2) - a^(2) - b^(2)`

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The correct Answer is:
B
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