Answer
$\frac{\sqrt 3}{2}$
Work Step by Step
Step 1. Evaluate $sin^{-1}\frac{1}{2}=\frac{\pi}{6}$ and $cos^{-1}0=\frac{\pi}{2}$
Step 2. $sin(sin^{-1}\frac{1}{2}+cos^{-1}0)=sin(\frac{\pi}{6}+\frac{\pi}{2})=sin(\frac{2\pi}{3})=\frac{\sqrt 3}{2}$