Light Is Incident at an Angle of 60 ^$\circ$ at an Air to Glass Interface

Multiple Choice

Light is incident at an angle of 60 ^$\circ$ at an air to glass interface.If the angle of refraction inside the glass is 32 ^$\circ$ ,then calculate the speed of light within the glass.

A) 3.00 $\times$ 10⁸ m/s
B) 1.77 $\times$ 10⁸ m/s
C) 4.90 $\times$ 10⁸ m/s
D) 1.84 $\times$ 10⁸ m/s
E) 1.62 $\times$ 10⁸ m/s