Recent content by hcky16

I tried, 2(sin(x))^2+3sin(x)=-1 2(sin(x))+3sin(x)+1=0 x=(-3(+/-)sqr 9-4(2)(1))/2(2) x=(-3(+/-)1)/4 sinx=(-3(+/-)1)/4 x=arcsin(-3(+/-)1)/4 x=-90 or -30 x=-1.571 or -.524

I tried doing this problem but I don't think it is right can someone help me? 2(sin(x))^2+3sin(x)=-1 over the interval [0,2pi)