Question
Without using tables, verify that:
$\sin 60^{\circ}=\frac{2 \tan 30^{\circ}}{1+\tan ^2 30^{\circ}}=\frac{\sqrt{3}}{2}$.
$\sin 60^{\circ}=\frac{2 \tan 30^{\circ}}{1+\tan ^2 30^{\circ}}=\frac{\sqrt{3}}{2}$.
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