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cot^(-1)(2.1^(2))+cot^(1)(2.2^(2))+cot^(...

`cot^(-1)(2.1^(2))+cot^(1)(2.2^(2))+cot^(-1)(2.3)^(2)+…………` up to `oo` =

A

`pi//2`

B

`pi//5`

C

`pi//4`

D

`pi//3`

Text Solution

Verified by Experts

The correct Answer is:
C
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