Question

the angle between incident ray and reflected ray is 60' degree what is the value of angle of incidence​

Answer 1

Angle b/w incident ray & reflected ray=60°

Then,<i+60°+<r=180°(all lie in same plane)

<i=<r(Acc. to law of reflection)

<i+60°+<i=180°

2<i+60°=180°

2<i=180°-60°=120°

<i=120°÷2=60°