BDMO National Junior 2018/8

Discussion on Bangladesh Mathematical Olympiad (BdMO) National
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nahin munkar
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BDMO National Junior 2018/8

Unread post by nahin munkar » Tue Jan 08, 2019 1:59 pm

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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samiul_samin
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Re: BDMO National Junior 2018/8

Unread post by samiul_samin » Mon Jan 21, 2019 10:59 pm

You can get the full solution here

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