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Homework Statement
Problem #199
http://img88.imageshack.us/img88/8008/scan0001vd.jpg
Solution
http://img21.imageshack.us/img21/2131/199hg.jpg
Homework Equations
Why is the angle from VB/A 20 degrees from the solution diagram? It would seem that I had to know that direction of VB/A had the same angle as VA in terms of the geometry (if two parallel lines are cut by a transversal, its alternating interior angles are equal). I just don't see how you can assume that.
The Attempt at a Solution
Since drawing a triangle is the first part, I don't have any "attempt" at it yet.
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