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## Homework Statement

Alright so I wasn't sure if I should put this in the Calculus section, but just in case that I would need derivatives to solve this I decided I would put this thread here.

http://img99.imageshack.us/img99/9351/capturepf.png [Broken]

## The Attempt at a Solution

I tried finding the relationship with trigonometry but it didn't work because the parabola is curved and does not extend as a straight line like a triangle. Could anyone give me a hint on how to start this question?

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