[m]\frac{4cos^2x-3}{\sqrt{\frac{1}{3}-sinx}}=0[/m] [m]\left[ \frac{\pi}{6}, 3\pi \right)[/m]
Решить уравнение: [m]\frac{4cos^2x-3}{\sqrt{\frac{1}{3}-sinx}}=0[/m] [m]\left\{\begin{matrix} 4cos^2x-3=0\\\\ \frac{1}{3}-sinx>0\end{matrix}\right.[/m]