int("cosec" x)/(cos^(2)(1+log tan.(x)/(2...

`int("cosec" x)/(cos^(2)(1+log tan.(x)/(2)))dx=`

A

`sin^2 [1 + log tan ""(x)/(2)]+c`

B

`tan [ 1 + log tan"" (x)/(2) ] +c `

C

` sec^2 [ 1 + log tan ""(x)/(2)]+c`

D

`- tan [ 1+ log tan"" (x)/(2)]+c`

Verified by Experts

The correct Answer is:

B

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