Question

РЕШИТЕ!!!!!! СРОЧНО!!!!!!!!! ПОМОГИТЕ!!!!!!!!!!!!!!!!! sinx cosx - 3 cos в квадрате x =0

Answer 1

$sin xcos x-3cos^2x =0\ cos x(sin x-3cos x)=0\ cos x=0Rightarrow x=fracpi2+2pi n\ sin x-3cos x=0\ sin x=3cos x\ tgx=3Rightarrow xapprox72^o=frac{2pi}5+pi n,;ninmathbb{Z}$