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If int(1+cos alpha cos x)/(cos alpha+cos...

If `int(1+cos alpha cos x)/(cos alpha+cos x)dx=ax+b log[(cot(alpha//2)+tan(x//2))/(cot (alpha//2)-tan(x//2))]+c` then `(a,b)-=`

A

`(sin alpha, - cosalpha)`

B

`(cos alpha, sin alpha)`

C

`(sec alpha, cos alpha)`

D

`(cos alpha, cos alpha)`

Text Solution

Verified by Experts

The correct Answer is:
B
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