Question

Sin3x+sin2x=0
Помогите

Answer 1

sin2x+sin3x=0
2sin(5x/2)•cos(x/2)=0
1) sin(5x/2)=0  =>  5x/2=πn  =>  x=(2π/5)•n
2) cos(x/2)=0  =>  x/2=π/2+πn  =>  x=π+2π•n