Tuesday, July 23, 2013

problem 4: An ACT math problem

I was taking a practice test in my Princeton review book and I came across this problem. ACT math is usually pretty boring, but this one had an interesting solution.

Triangle ABC, shown above in the standard (x,y) coordinate plane, is equilateral with vertex A at (0,w) and vertex B on the x-axis as shown. What are the coordinates of vertex C?

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