Question

what fraction of a clockwise revoution does the hour hand of a clock turn through when it goes from 4 to 7

Answer 1

When it moves from 12 to 6, it moves two right angles, that is, 180°. This is 180/360 = ½ of one revolution. When the hour hand goes from 3 to 9, it moves or rotates by two right angles, that is 180°. When the hour hand of the clock goes from 4 to 7, it rotates by 1 right angle, that is 90°.

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