please do fast as soon as possible and do both steps with proper explanation

A ray of light hits a glass prism (n = 1.50) with the angle of incidence 8, =22.0. (See the figure at right.) The angle oo = 25.0. The plane of incidence = the plane of the paper. The prism is surrounded by air. a) What is the angle 6, when the ray passed through the prism? b) How many degrees is the beam's original direction changed by the passage