$\text{Recall that }\frac{d}{dx}\text{tan}(x)=\text{sec}^{2}(x)$

$\text{Recall that }\frac{d}{dx}\text{sec}(y)=\text{tan}(y)\text{sec}(y)$

≈ 0.328
(By calculator, unless you know the antiderivative
of y = arcsin(x).)

Before you integrate, expand the integrand.