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If sum(r = 1)^(oo) "tan"^(-1)(1)/(2r^(2)...

If `sum_(r = 1)^(oo) "tan"^(-1)(1)/(2r^(2))=t`, then tan t is equal to

A

0

B

1

C

`sqrt(3)`

D

`1//sqrt(3)`

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The correct Answer is:
b
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