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Mock AIME 2 2006-2007/Problem 6

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Problem

If \displaystyle \tan 15^\circ \tan 25^\circ \tan 35^\circ =\tan \theta and \displaystyle 0^\circ \le \theta \le 180^\circ, find \displaystyle \theta.

Solution

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Looking for a challenging geometry text? Preparing for MATHCOUNTS or the AMC exams? Check out Art of Problem Solving's Introduction to Geometry by Richard Rusczyk.
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