Answer
$$s \approx 0.5148$$
Work Step by Step
$$\eqalign{
& \sin s = 0.4924 \cr
& {\text{Solving for }}s \cr
& s = {\sin ^{ - 1}}\left( {0.4924} \right) \cr
& {\text{Using a calculator into radian mode }} \cr
& s \approx 0.5148 \cr} $$