Question

cos x . cos 2x . cos 3x = 1/4. Find all the solutions of the given equation using the formula
$cos \alpha . \cos(2 \alpha ) . \cos(3 \alpha ) .... \cos((n - 1) \alpha ) = \frac{\sin( {2}^{n} \alpha ) }{ {2}^{n}sin \alpha }$
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Answer 1

Answer:

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