Question

what fraction of a clokvise revolution does the hour hand of a clock turn through , when it goes from 12 to 3?​

Answer 1

Working out:

In a complete clockwise revolution, the hour hand covers 360° around the clock. The direction in which the hands of the clocks turn is known as Clockwise direction.

From 12 am to 12 pm (Just for reference)

There are 12 hours, so the hands will cover 360° in 12 hours.

= 12 hours = 360° =

= 1 hour = 360° / 12 = 30°

Now in the question, it is given that the hands move from 12 to 3 in anti-clockwise direction. The direction opposite to the direction of hands of clock.

12 to 11, 11 to 10, 10 to 9, 9 to 8, 8 to 7, 7 to 6, 6 to 5, 5 to 4 and 4 to 3

In this span, it is going through 9 hours.

=9 hours = 30° x 9 =

=9 hours = 270º