Question
Prove that:
$2\sin\frac{5\pi}{12}\sin\frac{\pi}{12}=\frac{1}{2}$
$2\sin\frac{5\pi}{12}\sin\frac{\pi}{12}=\frac{1}{2}$
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$\sqrt{3}\left(\cos \frac{\pi}{6}+i \sin \frac{\pi}{6}\right)$