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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)/(5)`

B

`(pi)/(4)`

C

`(pi)/(3)`

D

`(pi)/(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
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