$$\left. \begin{array} { l } { \int \sin ^ { 2 } \theta \cos \theta d \theta } \\ { \int \frac { 1 } { \sqrt { 4 - 9 x ^ { 2 } } } d x } \end{array} \right.$$
$\frac{\left(\sin(\theta )\right)^{3}}{3}+С,\ \frac{\arcsin(\frac{3x}{2})}{3}+С_{1}$
$|x|<\frac{2}{3}$
