In ∆ ABC, ےA = 100º and AB = AC. Find ےB and ےC.
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Answer:
AB=AC
∠B=∠C [Angles opposite to equal sides are equal]
In △ABC,
∠A+∠B+∠C=180
o
100
o
+2∠B=180
o
∠B=40
o
Therefore,
∠B=∠C=40
o
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