If sin 3alpha = 4sin alpha sin (x + alpha )si | vedclass

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Question

(b) $3\sin \alpha - 4{\sin ^3}\alpha = 4\sin \alpha ({\sin ^2}x - {\sin ^2}\alpha )$

$	herefore $ ${\sin ^2}x = {\left( {\frac{{\sqrt 3 }}{2}} i

Vedclass · Accepted Answer

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

Vedclass · Answer

(b) $3\sin \alpha - 4{\sin ^3}\alpha = 4\sin \alpha ({\sin ^2}x - {\sin ^2}\alpha )$

$	herefore $ ${\sin ^2}x = {\left( {\frac{{\sqrt 3 }}{2}} ight)^2}$ 

==> ${\sin ^2}x = {\sin ^2}\pi /3$

==> $x = n\pi \pm \pi /3$.

If $\sin 3\alpha = 4\sin \alpha \sin (x + \alpha )\sin (x - \alpha ),$ then $x = $

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