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the angle of incidence is the initial ray angle and the angle of reflection is the reflected ray angle
Angle of Incidence = Angle of ReflectionThis is only true if the angle of incidence is greaterthan the critical angle.
The angle between the incident ray and reflected ray is known as angle of deviation due to reflection. This will always be equal to 2i. Here i is the angle of incidence. So if 2i = 90 then i = 90/2 = 45 So the angle of incidence has to be 45 deg
The ray angle refers to the angle made by the light of incident and reflection on the reflecting surface.
Such a ray is called a "bisector" of the angle.