$<->\sqrt{3}(2-2Sin^2x+Cosx-2)+3Sinx-Sin2x=0$$<-> \sqrt{3}Cosx-Sin2x-2\sqrt{3}Sin^2x+3Sinx=0$$<-> Cosx(\sqrt{3}-2Sinx)-\sqrt{3}Sinx(2Sinx-\sqrt{3})=0$$<->(Cosx+\sqrt{3}Sinx)(\sqrt{3}-2Sinx)=0$
$<->\sqrt{3}(2-2Sin^2x+Cosx-2)+3Sinx-Sin2x=0$$<-> \sqrt{3}Cosx-Sin2x-2\sqrt{3}Sin^2x+3Sinx=0$$<-> Cosx(\sqrt{3}-2Sinx)-\sqrt{3}Sinx(2Sinx-\sqrt{3})=0$đến đây khó qá tự làm tiếp nhe
$<->\sqrt{3}(2-2Sin^2x+Cosx-2)+3Sinx-Sin2x=0$$<-> \sqrt{3}Cosx-Sin2x-2\sqrt{3}Sin^2x+3Sinx=0$$<-> Cosx(\sqrt{3}-2Sinx)-\sqrt{3}Sinx(2Sinx-\sqrt{3})=0$
$<->(Cosx+\sqrt{3}Sin
x)(\sq
rt
{3}-2Sin
x)=0$