The figure below shows an incident light ray coming from the left parallel to the ground and a distance H = 23 cm above the ground. The incident ray travels through a medium having index of refraction n1 = 1.2 and then part of it reflects and the other part refracts into a medium having index of refraction n2 = 1.5.

Given that α = 30◦,

a.) determine the distance along the ground between A and B

b.) determine the angle between the reflected ray and the refracted ray.