Question

Решите уравнение:
5sin x+6sin x*cos x=0
3cos²x-5cos x-2=0

Answer 1

5*sin(x)+6*sin(2*x)+5*sin(3*x)+sin(4*x)=0; 10*sin(2*x)*cos(x)+6*sin(2*x)+2*sin(2*x)*cos(2*x)=0;
2*sin(2*x)*(5*cos(x)+3+cos(2*x))=0; 1); sin(2*x1)=0;
2). 5*cos(x)+3+cos(2*x)=0; 2*(cos(x))^2+5*cos(x)+2=0; cos(x2)=-0,5;