3 sin^2 x-3sinx cosx -4 cos^2 x=-2

3sin2x – 3sinx cosx – 4cos2x=-2; 1,5*sin (2*x) -4*cos (2*x)+2=0; 3*sin (x)*cos (x) -2*(cos (x) ^2+6*(sin (x) ^2=0; cos (x)=не рвно нулю. 6*(tg (x) ^2+3*tg (x) -2=0; tg (x1)=0,5*(-3+57^0,5); tg (x2)=0,5*(-3-57^0,5);