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If in DeltaABC,2b^(2)=a^(2)+c^(2), then...

If in `DeltaABC,2b^(2)=a^(2)+c^(2)`, then `(sin3B)/(sinB)` is equal to

A

`(c^(2)-a^(2))/(ca)`

B

`(c^(2)-a^(2))/(2ca)`

C

`((c^(2)-a^(2))/(ca))^(2)`

D

`((c^(2)-a^(2))/(2ca))^(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
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