$$\int \frac { ( \sin ^ { - 1 } x ) ^ { 2 } } { \sqrt { 1 - x ^ { 2 } } } d x$$
$\frac{\left(\arcsin(x)\right)^{3}}{3}+С$
$\frac{\left(\arcsin(x)\right)^{2}}{\sqrt{1-x^{2}}}$
