What Is The Angle Of Incidence Of A Light Ray Reflected Off A Plane Mirror At An Angle Of 55 Degree To The Normal?

What Is The Angle Of Incidence Of A Light Ray Reflected Off A Plane Mirror At An Angle Of 55 Degree To The Normal? What is the angle of incidence of a light ray reflected off a plane mirror at an angle of 55 degree to the normal? Hence, as angle of incidence is 55∘