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If 2tan^(-1)[sqrt((a-b)/(a+b)).tan(theta...

If `2tan^(-1)[sqrt((a-b)/(a+b)).tan(theta/2)] = cos^(-1)[(2a + 3b)/(3a + 2b)]`, then `cos theta` is equal to

A

`1//2`

B

`1//3`

C

`2//3`

D

`2a//3b`

Text Solution

Verified by Experts

The correct Answer is:
C
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