Abeam of light shining from water to air strikes the surface at an angle greater than 48° and produces total internal reflection. if the incident beam is at a 50° angle, at what angle is the reflected beam?

To find the solution for this problem, let us remember that the angle of incidence and the angle of reflection are always the same. Thus,  the reflected beam would be at an angle of 50 degrees as well.

Total internal reflection means that the total amount of incident light at the boundary between two media gets reflected, and therefore no beam of light is transmitted to the air in this case.