Question

The angle between the incident ray and the reflected ray is 100°. What is the value of the angle of incidence​

Answer 1

Answer:

as the answer is 50 degree

Explanation:

as sini =sinr

as I+r=100

2i=100

I=50 degree

Answer 2

Explanation:

∠i + ∠r = 100°

Since, ∠i = ∠r

∴ ∠i + ∠i = 100°

⇒ 2 ∠i = 100°

⇒ ∠i = 100∘/2 = 50

∴ Angle of incidence = 50°.