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+4 votes
asked in Mathematics by (7.5k points)
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In a traingle ABC,AD is the bisector of angle BAC and I is its incentre.Prove that AI/ID=AB+AC/BC

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commented by (7.5k points)
Please explain how triangle ICA and ICD are similar?
commented by (9.7k points)
We know that bisector of an angle bisect in two equal angles. So, in ICA and ICD angles are equal and one common side. So they are similar

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