Question

if the angle between the incident ray and the reflected ray is 90° what are the values of angle of incidence and reflection​

Answer 1

angle of incidence = angle of reflection

so values of angle of incidence and angle o reflection =45°

Answer 2

I will tell u the answer

Here we find the incident ray is making an angle of 90 degree with that of the reflected ray , so the incident ray is making an angle 90 ÷2 degree with the angle of incidence is 45 degrees i.e (normal bisects the angle between the incident ray and the reflected ray of light .)