2014 AIME II Problems/Problem 14

Revision as of 22:21, 29 March 2014 by Gamjawon (talk | contribs)

14. In △ABC, AB=10, ∠A=30∘, and ∠C=45∘. Let H, D, and M be points on the line BC such that AH⊥BC, $∠BAD=∠CAD$ (Error compiling LaTeX. ! Package inputenc Error: Unicode char \u8:∠ not set up for use with LaTeX.), and $BM=CM$. Point $N$ is the midpoint of the segment $HM$, and point $P$ is on ray $AD$ such that PN⊥BC. Then $AP^2=\dfrac{m}{n}$, where $m$ and $n$ are relatively prime positive integers. Find $m+n$.

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