Stereochemistry of the Addition of Bromine to Trans-Cinnamic Acid

The question is attached and here are the Directions:

Based on the mechanism present, predict the product of this reaction.
Highlight the Br-C-C-Br dihedral angle.
Is the diehdral angle (0 degrees for sin addition or 180 degrees for anti addition)?
Look at the dihedral angle between the phenyl ring and the carboxylic acid group. Does this correlate to the trans-cinnamic acid starting material?
Repeat this process for the other diastereomer.

Please inclue structures (with sterochemistry labeled).

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