Say the number is x
x/8+4=7
solve for x
x/8=3
x=24
Answer:
they all cancel out it would be 0
Step-by-step explanation:
Answer:

Step-by-step explanation:
Angle of incidence is the angle formed at the point of incidence between the incident ray and the normal. Angle of refraction is the angle formed between the refracted ray and the normal .
According to Snell's law,

Here,
are indexes of incidence and refraction.
are angles of incidence and refraction.
Given:

On putting these values in the Snell's law, we get
