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sum(i=0)^(2) cot^(-1) { - (i+1)} = ….......

`sum_(i=0)^(2) cot^(-1) { - (i+1)} = …....` .

A

`- (5pi)/(2)`

B

`- (3pi)/(2)`

C

`(pi)/(2)`

D

`(5pi)/(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
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