Home/ Questions/Q 2087
Next
Answered
Kajal Aggarwal
  • 5
Asked: 2020-11-03T10:04:26+00:00 In:

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

  • 5

NCERT Solutions for Class 9 Maths Chapter 7
Important NCERT Questions
Triangles
NCERT Books for Session 2022-2023
CBSE Board and UP Board Others state Board
EXERCISE 7.2
Page No:124
Questions No: 7

2020-2021cbsechapter 7class 9mathematicsncerttriangles
Share

    2 Answers

    1. Get Hindi Medium and English Medium NCERT Solution for Class 9 Maths to download.
      Please follow the link to visit website for first and second term exams solutions.
      https://www.tiwariacademy.com/ncert-solutions/class-9/maths/chapter-7/

      • 1
    2. Best Answer
      ABC is a right angled triangle in which ∠A = 90° and AB = AC. Find ∠ B and ∠ C.

      In ΔABC,
      AB = AC [∵ Given]
      ∠B = ∠C [∵ Angles opposite to equal sides are equal]
      In ΔABC,
      ∠A + ∠B + ∠C = 180°
      ⇒ 90° + ∠B + ∠C = 180° [∵ ∠A = 90°]
      ⇒ 90° + ∠B + ∠B = 180° [∵ ∠C = ∠B]
      ⇒ 2∠B = 180° – 90° = 90°
      ⇒ ∠B = (90°/2) = 45°
      Hence, ∠B = ∠C = 90°

      • 1
    Leave an answer

    Leave an answer

    Browse