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## Homework Statement

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

Air: 1

Water 1.33

## Homework Equations

Snells law

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]