BDMO National Junior 2018/8
- nahin munkar
- Posts:81
- Joined:Mon Aug 17, 2015 6:51 pm
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In triangle $\triangle ABC$, $AB=10$, $CA=12$. The bisector of $\angle B$ intersects $CA$ at $E$, and the bisector of $\angle C$ intersects $AB$ at $D$. $AM$ and $AN$ are the perpendiculars to $CD$ and $BE$ respectively. If $MN=4$, then find $BC$.
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# Mathematicians stand on each other's shoulders. ~ Carl Friedrich Gauss
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Re: BDMO National Junior 2018/8
You can get the full solution here