MathDB
2016 General #7: Incircle in a 13-14-15 triangle

Source:

November 15, 2016
geometry

Problem Statement

Let ABC be a triangle with AB=13,BC=14,CA=15AB = 13, BC = 14, CA = 15. The altitude from AA intersects BCBC at DD. Let ω1\omega_1 and ω2\omega_2 be the incircles of ABDABD and ACDACD, and let the common external tangent of ω1\omega_1 and ω2\omega_2 (other than BCBC) intersect ADAD at EE. Compute the length of AEAE.