If sin 2x + sin 4x = 2sin 3x, then x = | vedclass

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Question

(a) $2\sin 3x\cos x - 2\sin 3x = 0$,

$	herefore $ $\sin 3x = 0$, $\cos x = 1$

$\Rightarrow 3x = n\pi $ or $x = \frac{{n\pi }}{3}$ and $x = 2n\p

Vedclass · Accepted Answer

$\frac{{n\pi }}{3}$

Vedclass · Answer

(a) $2\sin 3x\cos x - 2\sin 3x = 0$,

$	herefore $ $\sin 3x = 0$, $\cos x = 1$

$\Rightarrow 3x = n\pi $ or $x = \frac{{n\pi }}{3}$ and $x = 2n\pi $

The second value $x = 2n\pi $ is included in the value given by $x = \frac{{n\pi }}{3}$.

If $\sin 2x + \sin 4x = 2\sin 3x,$ then $x =$

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