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cot^(2)x-(1)/(2)cot^(4)x+(1)/(3)cot^(6)x...

`cot^(2)x-(1)/(2)cot^(4)x+(1)/(3)cot^(6)x -(1)/(4)cot^(8)x+…oo=`

A

log tanx

B

2 log tan x

C

2 log cosec x

D

log cosec x

Text Solution

Verified by Experts

The correct Answer is:
C
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