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MathNet 2023-part-07 — 187 problems (EN–VI) Question 97

Math Olympiad Vault · MathNet 2023-part-07 — 187 problems (EN–VI)

Question 97

Acute triangle $ABC$ has circumcenter $O$. The bisector of $\angle ABC$ and the altitude from $C$ to side $AB$ intersect at $X$. Suppose that there is a circle passing through $B$, $O$, $X$, and $C$. If $\angle BAC = n^{\circ}$, where $n$ is a positive integer, compute the largest possible value of $n$.