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Geometry Level 4

Consider a triangle A B C ABC such that P P and Q Q are the feet of the perpendiculars drawn from point A A onto the internal bisectors of angles B B and C C , respectively.

Let a , b , c a,b,c denote thee sides opposite to the vertices A , B , C A,B,C , respectively.

Denote X X as the length P Q PQ .

Compute 56 ( X + a + b + c 2 2 ( b + c ) ) 56 \left( \dfrac{X+ \frac{a+b+c}2}{2(b+c)}\right) .


The answer is 28.

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1 solution

Ahmad Saad
Nov 17, 2016

good solution

A Former Brilliant Member - 4 years, 7 months ago

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