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If in a triangle ABC, a=5, b=4 and A=pi/...

If in a triangle ABC, `a=5, b=4 and A=pi/2 +B,` then the value of `tan ""C/2` is-

A

`tan^(-1)((1)/(9))`

B

`tan^(-1)((1)/(40))`

C

Cannot be evaluated

D

`2tan^(-1)(1//9)`

Text Solution

Verified by Experts

The correct Answer is:
D
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