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Cot^(-1)3+Cot^(-1)7+Cot^(-1)13+……n terms...

`Cot^(-1)3+Cot^(-1)7+Cot^(-1)13+`……n terms =

A

`S_(10)="tan"^(-1)5/6`

B

`S_(oo)=(pi)/4`

C

`S_(6)="sin"^(-1)4/5`

D

`S_(20)=cot^(-1)1.1`

Text Solution

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The correct Answer is:
A, B, D
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