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GAIC Math 2024 Problem 99

  • Answer

In triangle ABC\mathrm{ABC} with its incenter I\mathrm{I}, if 3IA→+4IB→+5IC→=0→3\overrightarrow{IA} + 4\overrightarrow{IB} + 5\overrightarrow{IC} = \overrightarrow{0}, then the measure of angle C\mathrm{C} is _____.

Dataset text MathOdyssey. Open licence.

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