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Prove that: 2tan^(-1)1/2+tan^(-1)1/7=tan...

Prove that: `2tan^(-1)1/2+tan^(-1)1/7=tan^(-1)(31)/(17)`

A

`tan^(-1)((31)/(17))`

B

`tan^(-1)((25)/(21))`

C

`tan^(-1)((17)/(3))`

D

`tan^(-1)((21)/(25))`

Text Solution

Verified by Experts

The correct Answer is:
A
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