Question

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

Answer 1

Question 5.Find the number of right angles turned through by the hour hand of a clock when it goes from: (a) 3 to 6, (b) 2 to 8, (c) 5 to 11, (d) 10 to 1, (e) 12 to 9, (f) 12 to 6. Answer: (a) One right angle

Answer 2

Answer:

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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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Hence,

Angle turned by the hour hand from 3 to 6

$= \frac{1}{4} of \: one \: revolution \: \: \: \: ( \frac{3}{10} \: or \: \frac{1}{4})$

$= \frac{1}{4} \times 360° \: \: \: (since \: one \: revolution \: = 360° )$

= 90° or one right angle.

Thus,

The hour hand turned through one right angle in going from 3 to 6 .