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int (1+cos x)/(1-cos x)dx=...

`int (1+cos x)/(1-cos x)dx=`

A

`2 cot((x)/(2)) - x + c `

B

`-2 cot((x)/(2)) - x + c`

C

`-2 cot((x)/(2))+ x + c`

D

`2 cot((x)/(2)) + x + c`

Text Solution

Verified by Experts

The correct Answer is:
B
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