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If int (sin x)/(sin (x-alpha))dx =Ax+B l...

If `int (sin x)/(sin (x-alpha))dx =Ax+B log sin (x-alpha)+C`, then the value of (A,B) , is

A

`(sin alpha, cos alpha)`

B

`(cos alpha, sin alpha)`

C

`(- sin alpha, cos alpha)`

D

`(-cos alpha, sin alpha)`

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