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Ex 7.2, 7 - ABC is a right angled triangle in which A = 90  - Ex 7.2

  1. Chapter 7 Class 9 Triangles
  2. Serial order wise
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Ex 7.2, 7 ABC is a right angled triangle in which ∠A = 90° and AB = AC. Find ∠B and ∠C. Given AB = AC ⇒ ∠C = ∠B In ΔABC, ∠A + ∠B + ∠C = 180° ⇒ 90° + ∠B + ∠C = 180° ⇒ 90° + ∠B + ∠B = 180° ⇒ 2 ∠B = 90° ⇒ ∠B = 45° ∴ ∠B = ∠C = 45°

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Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He provides courses for Mathematics from Class 9 to 12. You can ask questions here.
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