Question

решите 48 задание плиз

Answer 1

$frac{cos150-5sin300}{tg240}= frac{-frac{sqrt{3}}{2}-5*(-frac{sqrt{3}}{2})}{ sqrt{3}}=frac{-frac{sqrt{3}}{2}+frac{5sqrt{3}}{2}}{sqrt{3}}=frac{-frac{sqrt{3}+5sqrt{3}}{2}}{sqrt{3}}=frac{frac{4sqrt{3}}{2}}{sqrt{3}}=frac{2sqrt{3}}{sqrt{3}}=2$