Evalute the following integrals int c...

Evalute the following integrals
`int ` cos ecx log (cos ecx - cot x ) dx

A

`(1)/(4) log^(2)` (cosecx + cot x ) + C

B

`(1)/(2) log^(2) ` (cosecx - cot x ) + C

C

`- (1)/(2) log^(2) ` (cosecx - cot x ) + C

D

`(1)/(2) `log (cosecx - cot x ) + C

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The correct Answer is:

B

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