Question

помогите, пожалуйста ​

Answer 1

Ответ:   -3 .

$sin^2\dfrac{\pi}{3}=\Big(sin\dfrac{\pi}{3}\Big)^2=\Big(\dfrac{\sqrt3}{2}\Big)^2=\dfrac{3}{4}=0,75\\\\\\log_{0,75}64-log_{sin^2(\pi /3)}27=log_{0,75}64-log_{0,75}27=log_{0,75}\dfrac{64}{27}=log_{0,75}\dfrac{4^3}{3^3}=\\\\=log_{\frac{3}{4}}\Big(\dfrac{3}{4}\Big)^{-3}=-3$