Question

Обчислить 2 (sin 60°-tg30°)​

Answer 1

$2( \sin(60) - \tg(30) ) = 2( \frac{ \sqrt{3} }{2} - \frac{ \sqrt{3} }{3} ) = \\ 2 \times \frac{3 \sqrt{3} - 2 \sqrt{3} }{6} = 2 \times \frac{ \sqrt{3} }{6} = \frac{ \sqrt{3} }{3}$