Помогите, пожалуйста)




1) 7sin2x-2sinx=0
2) sin2x+10cos^2x=0
3) 5cos2x-14cos^2x+8=0
4) 3cos2x-14cosx+7=0
5) 11sin2x+6cos^2x+6=0
6) 16cosx-11sinx-4=0
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