1. The problem statement, all variables and given/known data A ray of light strikes a piece of glass (n=refraction index=1.5), making an angle of 30 degrees with the surface. What angle does the refracted ray make with the surface? 2. Relevant equations Snell's Law: n1*sin(theta1)=n2*sin(theta2) 3. The attempt at a solution We're only given one n...how do I do this?