Question

Prove that $\sin (2\times {30}^o)=\frac{2\tan {30}^o}{1+{\tan }^2{30}^o}$.

Answer 1

$Sin2\left({30}^{\circ }\right)=\frac{2tan{30}^{\circ }}{1+ta{n}^{2}30}$

sin 2A=$\frac{2tanA}{1+ta{n}^{2}A}$