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ABC is a right angled triangle in which ∠A = 90º and AB = AC. Find ∠B and ∠C.

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ABC is a right angled triangle in which ∠A = 90º and AB = AC. Find ∠B and ∠C.

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It is given that

AB = AC

∠C = ∠B (Angles opposite to equal sides are also equal)

In ΔABC,

∠A + ∠B + ∠C = 180º (Angle sum property of a triangle)

∴ 90º + ∠B + ∠C = 180º

∴ 90º + ∠B + ∠B = 180º

∴ 2 ∠B = 90º

∴ ∠B = 45º

∴ ∠B = ∠C = 45º

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