Muzaffar Ответ. 1. 4*(sin(x))^2 - 3*(sin(x)=0; sin(x)*(8*cos(x)-3)=0; sin(x1)=0; cos(x2)=3/8; 2. 2*(sin(x))^2-1=0; sin(x1)=(2)^-0,5; x2=-(2^-0,5));