ONLY NEED HELP WITH PART B!!!!!!!!

Problem 6:Consider the situation in the figure - a student diver in a pool and an instructor on the edge, outside the water. Since the indices of refraction of air and water are different, the light rays coming from the diver and the instructor are refracted at the surface, changing their apparent position with respect to each other. The diver sees the instructor at an apparent angle of_a=34, measured from the normal to the interface. Randomized Variables_a=34