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Q.

When a clock shows 4 o'clock, how much angle do its minute and hour needles make?

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a

$120 °$

b

$\frac{π}{3} rad$

c

$\frac{π}{6} rad$

d

$160 °$

answer is A.

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Detailed Solution

Question Image

From the above diagram angle

$θ = 4 \times 30 ° = 120 ° = \frac{2 π}{3} rad$

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