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?