Ex 5.2, 5 - Find number of right angles turned through by hour hand

Ex 5.2, 5 - Chapter 5 Class 6 Understanding Elementary Shapes - Part 2
Ex 5.2, 5 - Chapter 5 Class 6 Understanding Elementary Shapes - Part 3 Ex 5.2, 5 - Chapter 5 Class 6 Understanding Elementary Shapes - Part 4 Ex 5.2, 5 - Chapter 5 Class 6 Understanding Elementary Shapes - Part 5 Ex 5.2, 5 - Chapter 5 Class 6 Understanding Elementary Shapes - Part 6

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Transcript

Ex 5.2, 5 Find the number of right angles turned through by the hour hand of a clock when it goes from (a) 3 to 6 When we move from 3 to 6. We move 1 right angle. We know that 1 right angle = 1/4 of revolution = 1/4 × 12 hours = 3 hours Ex 5.2, 5 Find the number of right angles turned through by the hour hand of a clock when it goes from (b) 2 to 8 When we move from 2 to 8. We move 6 hours, i.e. 1/2 revolution, i.e. 2 right angles Ex 5.2, 5 Find the number of right angles turned through by the hour hand of a clock when it goes from (c) 5 to 11 When we move from 5 to 11. We move 6 hours, i.e. 1/2 revolution i.e. 2 right angles Ex 5.2, 5 Find the number of right angles turned through by the hour hand of a clock when it goes from (d) 10 to 1 When we move from 10 to 1. We move 3 hours, i.e. 1 right angle Ex 5.2, 5 Find the number of right angles turned through by the hour hand of a clock when it goes from (e) 12 to 9 When we move from 12 to 9. We move 9 hours, i.e. 3/4 revolutions i.e. 3 right angles Ex 5.2, 5 Find the number of right angles turned through by the hour hand of a clock when it goes from (f) 12 to 6 When we move from 12 to 6. We move 6 hours, i.e. 1/2 revolutions i.e. 2 right angles

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.