If the solutions for theta of Cosptheta...

If the solutions for `theta` of `Cosptheta + Cosqtheta =0,p>q>0` are in A.P then numerically smallest common differece of A.P is

A

`pi/(p+q)`

B

`(2pi)/(p+q)`

C

`(pi)/(2(p+q))`

D

`1/(p+q)`

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The correct Answer is:

B

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