Question

O valor de $\frac{3 cos 0}\frac{2tang 4\pi /3}$

Answer 1

$\frac{3cos 0}{2tg 4 \pi /3} =\frac{3*1}{2* \sqrt{3}} =\frac{3}{2 \sqrt{3}} =\frac{3*\sqrt{3}}{2 \sqrt{3}*\sqrt{3}} =\frac{3\sqrt{3}}{2 \sqrt{9}}=\frac{3\sqrt{3}}{2*3}=\frac{\sqrt{3}}{2}$