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MathNet 2010 — Part 06 Question 118

Math Olympiad Vault · MathNet 2010 — Part 06

Question 118

Let $\omega$ be a circumscribed circle of $ABC$. Chord $AD$ is a bisector of triangle $ABC$ and meets $BC$ at $L$, chord $DK$ is perpendicular to $AC$ and meets it at $M$. Find the ratio $\frac{AM}{MC}$, if $\frac{BL}{LC} = \frac{1}{2}$.

Question illustration
Fig.15