Question

-(22/(cos^2 34 + cos^2 124)) значение выражения

Answer 1

$- \dfrac{22}{cos^234^o+cos^2124^o} =- \dfrac{22}{cos^234^o+cos^2(90^o+34^o)} = \\ =- \dfrac{22}{cos^234^o+sin^234^o}=- \dfrac{22}{1}=-22$