Question

 Помогите ребят!!!

$frac{12}{sin^237+sin^2127}$

Answer 1

$frac{12}{sin^2 37^o+sin^2 127^o}=\\frac{12}{sin^2 37^o+sin^2 (90+37)^o}=\\frac{12}{sin^2 37^o+(cos 37^o)^2}=\\frac{12}{sin^2 37^o+cos^2 37^o}=\\frac{12}{1}=12$