Question
$2 \cos \theta=x+\frac{1}{x}$ then the value of $x^{6}-\frac{1}{x^{6}}$ is(a) $2 \mathrm{i} \sin ^{6} \theta$(b) $2 \sin 2 \theta$(c) i $\sin 6 \theta$(d) $2 \mathrm{i} \sin 6 \theta$
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Step 1: Given that $2 \cos \theta=x+\frac{1}{x}$, we are asked to find the value of $x^{6}-\frac{1}{x^{6}}$. Show more…
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