1. Chapter 6 Class 9 Lines and Angles
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Example 7 - Chapter 6 Class 9 Lines and Angles

Last updated at May 29, 2018 by

Example 7 - If QT ⊥ PR, ∠TQR = 40° & ∠SPR = 30°, find x & y - Examples

  1. Chapter 6 Class 9 Lines and Angles
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Example 7 In Figure, if QT ⊥ PR, ∠TQR = 40° and ∠SPR = 30°, find x and y. In ∆ TQR, ∠ TQR = 40° ∠ QTR = 90° Now, x + ∠ TQR + ∠ QTR = 180° x + 40° + 90° = 180° x + 130° = 180° x = 180° – 130° x = 50° Now, y is the exterior angle of Δ PSR y = ∠ SPR + x y = 30° + 50° y = 80°

Chapter 6 Class 9 Lines and Angles
Serial order wise

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Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 8 years. He provides courses for Maths and Science at Teachoo. You can check his NCERT Solutions from Class 6 to 12.