4sin^2 x + 4cos(п/2+x)=3sin п/2 и найти просежутки (-3п\2 ; 3п)

[latex]4sin^{2} x-4sinx - 3=0[/latex] [latex]sinx = - \frac{1}{2}[/latex] [latex]x = -\frac{5p}{6} + 2pk[/latex] [latex]x = - \frac{p}{6} + 2pk[/latex] [latex]x = - \frac{p}{6}[/latex] [latex]x = -\frac{5p}{6}[/latex] [latex]x = \frac{7p}{6}[/latex]  [latex]x = \frac{11p}{6}[/latex]