Question

triangle ABC is an isosceles triangle right angle with angle A =90 degrees and AB is equal to AC then calculate Angle B and angle C

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Answer 1

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Here is your answer ☺

Given - ∆ ABC is an isoceles traingle in which AB = AC and Angle A = 90°

To find - Angle B and Angle C


calculation - Angle B = Angle C .. Isoceles thereom. ( angles opposite to equal sides are equal)

Therefore, Angle B= Angle C

Let Angle B = C = x

thus, Angle A + Angle B + Angle C = 180°


Reason - Angle sum property of a triangle.

Thus, x + x + 90° = 180°

2x = 180-90

2x = 90

thus, x = 90/2=> 45°

so, Angle B = C = 45°

Hope it helps!