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**Direction of travel in glass....please please HELP!**

**1. Homework Statement**

A 0.95-cm-thick layer of water stands on a horizontal slab of glass. A light ray in the air is incident on the water 58° from the normal. What is the ray's direction of travel in the glass? (Give the answer in degrees.)

**2. Homework Equations**

Nwater = 1.33

Nglass = 1.5

**3. The Attempt at a Solution**

I thought this was...

sin theta 1/sin theta 2 = n2/n1

1.33/1.5 * sin 58 = 0.7519 then take the inverse of sin 0.7519 = 48.758 degrees