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Questions  >>  CBSE XI  >>  Math  >>  Trigonometric Functions
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Find the general solution for the equation $\cos 3x+\cos x-\cos 2x=0$

$\begin{array}{1 1}(A)\;x=2n\pi\pm \large\frac{\pi}{3}&(B)\;x=n\pi\pm \large\frac{\pi}{3}\\(C)\;x=2n\pi\pm \large\frac{\pi}{4}&(D)\;x=2n\pi\pm \large\frac{\pi}{6}\end{array} $

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