Laws of reflection & angles of incidence and reflection

The law of reflection states that the incident ray, the reflected ray, and the normal to the surface of the mirror all lie in the same plane. Furthermore, the angle of reflection is equal to the angle of incidence .

Angle B is the angle of incidence (angle between the incident ray and the normal). Angle C is the angle of reflection (angle between the reflected ray and the normal). 2. A ray of light is incident towards a plane mirror at an angle of 30-degrees with the mirror surface.