Compare the angles of triangle ABC if angle B = 90 degrees.
September 29, 2021
ABC is a triangle.
∠B = 90 °.
ABC is a right-angled triangle and since we are given ∠B = 90 °, therefore the sum ∠A + ∠C = 90 ° (since the sum of the angles of the triangle is 180 °).
∠A = ∠C = 90: 2 = 45 °.
Answer: ∠A = ∠C = 90: 2 = 45 °.
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