The index of refraction for diamond is n=2.42. If you shine light on diamond at an angle of theta = 23 degrees from air, what would the refracted

The index of refraction for diamond is n=2.42. If you shine light on diamond at an angle of theta = 23 degrees from air, what would the refracted angle be? How would your answer change if the diamond were immersed in water (that is, the light was coming from a region with n=1.33)?