Angling-Triangling!

Geometry Level 5

Given A B C \triangle ABC , let D D be a point on A B AB produced beyond B B , such that B D = B C BD=BC , and let E E be a point on A C AC produced beyond C C , such that C E = B C CE=BC . Let P P be the intersection of B E BE and C D CD , and suppose that:

D P B E + E P C D = 2 sin ( B A C 2 ) \large{\dfrac{DP}{BE}+ \dfrac{EP}{CD} = 2\sin \left( \dfrac{\angle BAC}{2} \right) }

Submit the value of B A C \angle BAC in degrees as your answer.


The answer is 90.

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