Question

The angle between incident ray and reflected ray is 60°. What is the value of angle of incidence?

Answer 1

The angle made between the reflected ray and incident ray includes the angle of incidence and angle of reflection. So, we have, i  + r = 60°

Also, we know that angle of incidence is equal to angle of reflection. 

So, we have, i = r

Therefore, i + i = 60°

i = `(60^circ)/2` = 30°