Тригонометрические уравнения
Никак не могу понять способ решения, помогите пожалуйста)
SinxCosx+2Sin^2x=Cos^2x
3Sin^2x=2SinxCosx+Cos^2x
3Sin^2x-4SinxCosx+5cos^2x=2
5Sin^2x-2SinxCosx+Cos^2x=4
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