Polarization Conceptual Question

[megeinstein]

Homework Statement

You are standing on the sidewalk, looking toward a shop window. You notice the reflection of a person of your height walking toward you. The reflected light is partially polarized. Is it polarized vertically, horizontally, or somewhere in between?

Homework Equations

tan$$\Theta$$$$_{p}$$ = n$$_{2}$$/n$$_{1}$$
n$$_{1}$$ = n$$_{air}$$ = 1
n$$_{2}$$ = n$$_{glass}$$ $$\approx$$ 1.5

The Attempt at a Solution

I don't know how to start thinking about this problem. I know that for a light to be partially polarized means that it is dimmer than it was originally and also that the light in a certain direction has been blocked. I don't know how I would figure out which direction the reflection is polarized though.

 

[Lok]

While the equations are good, do you need them?

What does Brewster's angle tell you about the polarized light reflected of glass?