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- Feb 14, 2012
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Given a triangle $ABC$ such that $\angle BAC=103^{\circ}$ and $\angle ABC=51^{\circ}$. Let $M$ be a point inside triangle $ABC$ such that $\angle MAC=30^{\circ}$, $\angle MCA=13^{\circ}$.
Find $\angle MBC$ with proof.
Find $\angle MBC$ with proof.