Question

It would be really helpful if someone answered this.

Answer 1

Basically saying, the graph in the picture is a acute angle, at a different angle. The answer looks like 55 degrees

Answer 2

`\qquad\qquad\huge\underline{{\sf Answer}}`

According to first law of reflection, we know that :

Angle made by the incident ray and normal [ i.e angle of incidence ] is always equal to Angle made by the reflected ray and normal [ i.e Angle of reflection ]

Therefore, we can say that the missing angle (angle of reflection) has the same value as the angle of incidence which is equal to 45°

Please read the statement through to understand the procedure ~