Question

2sinx*cosx-3sinx*cos(в квадрате)x=0

Answer 1

sinxcosx(2-3cosx)=0
1/2sin2x*(2-3sosx)=0
sin2x=0
2x=πn⇒x=πn/2
cosx=2/3⇒x=+-arccos2/3+2πn