I need to find how a ray of light will travel from the snail towards Andrews eye.
I need to find the angle of incidence and angle of refraction.
I know the index of refraction of both materials
1.33 *sin(X) = sin(y)
x is angle of incidence
y is angle of refraction
The Attempt at a Solution
I only know how to solve these problems when I have a normal line
How do I find the normal line[/B]