If \[\cos p\theta =\cos q\theta ,p\ne q\], then [MP PET 1995]

1.	If \[\cos p\theta =\cos q\theta ,p\ne q\], then [MP PET 1995]
A.	\[\theta =2n\pi \]
B.	\[\theta =\frac{2n\pi }{p\pm q}\]
C.	\[\theta =\frac{n\pi }{p+q}\]
D.	None of these
Answer» C. \[\theta =\frac{n\pi }{p+q}\]

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If \[\cos p\theta =\cos q\theta ,p\ne q\], then [MP PET 1995]

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