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Question

Question 5 (a)

Find the number of right angles turned through by the hour hand of a clock when it goes from:
3 to 6

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Solution

A complete revolution of the hour hand covers 12 hours or four right angles i.e 360. Which means 1 hour = 30.
When the hour hand goes from 3 to 6, the time difference = 6 - 3 = 3 hours i.e one-fourth of 12 hours.
14th of 360
90
= One right angle.


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