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cot^(-1)9 + cosec^(-1)(sqrt(41)/4)=...

`cot^(-1)9 + cosec^(-1)(sqrt(41)/4)=`

A

0

B

`tan^(-1) 2`

C

`pi/4`

D

`pi/2`

Text Solution

Verified by Experts

The correct Answer is:
C
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