If the solution for \[\theta \]of \[\cos p\theta +\cos q\theta =0,\ p>0,\ q>0\]are in A.P., then the numerically smallest common difference of A.P. is [Kerala (Engg.) 2001]

If the solution for \[\theta \]of \[\cos p\theta +\cos q\theta =0,\ p>

1.	If the solution for \[\theta \]of \[\cos p\theta +\cos q\theta =0,\ p>0,\ q>0\]are in A.P., then the numerically smallest common difference of A.P. is [Kerala (Engg.) 2001]
A.	\[\frac{\pi }{p+q}\]
B.	\[\frac{2\pi }{p+q}\]
C.	\[\frac{\pi }{2(p+q)}\]
D.	\[\frac{1}{p+q}\]
Answer» C. \[\frac{\pi }{2(p+q)}\]

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If the solution for \[\theta \]of \[\cos p\theta +\cos q\theta =0,\ p>0,\ q>0\]are in A.P., then the numerically smallest common difference of A.P. is [Kerala (Engg.) 2001]

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