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Question

In a triangle ABC, A=110o and AB=AC. Find B and C.

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Solution

As AB=AC hence B=C (Equal sides AB=AC have equal opposite angles)
Using theorem, Sum of interior angles of a triangle is 180o .
Therefore A+B+C=180o
110o+2B=180o [GIven A=110o]
B=35o
Hence, B=C=35o

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