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  1. Chapter 5 Class 7 Lines and Angles
  2. Serial order wise

Transcript

Ex 5.1, 1 Find the complement of each of the following angles: (i) We know that, If two angles are complementary, their sum is 90° So, Angle 1 + Angle 2 = 90° 20° + Angle 2 = 90° Angle 2 = 90° − 20° Angle 2 = 70° So, Complementary of 20° is 70° Ex 5.1, 1 Find the complement of each of the following angles: (ii) We know that, If two angles are complementary, their sum is 90° So, Angle 1 + Angle 2 = 90° 63° + Angle 2 = 90° Angle 2 = 90° − 63° Angle 2 = 27° So, Complementary of 63° is 27° Ex 5.1, 1 Find the complement of each of the following angles: (iii)We know that, If two angles are complementary, their sum is 90° So, Angle 1 + Angle 2 = 90° 57° + Angle 2 = 90° Angle 2 = 90° − 57° Angle 2 = 33° So, Complementary of 57° is 33°

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Davneet Singh
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.