The minute hand completes a full circle (360°) in 60 minutes, moving 6° per minute.
The hour hand completes a full circle (360°) in 12 hours (720 minutes), moving 0.5° per minute. Each hour gap is 30° (360° ÷ 12), and the hour hand takes 60 minutes to cover it.
At 8:40, the minute hand is at 40 minutes.
Position from 12 o'clock:
40×6°=240°
The minute hand is pointing at "8" on the clock.
At exactly 8:00, the hour hand would be at:
8×30°=240°
However, 40 minutes have passed, so the hour hand has moved ahead:
40×0.5°=20°
Hour hand position:
240°+20°=260°
The hour hand is between 8 and 9, closer to 9.
Angle between the hands:
∣260°−240°∣=20°
Using the formula ∣30H−211M∣ where H = hours and M = minutes:
∣30(8)−211(40)∣
=∣240−220∣
=20°
Therefore, the angle between the hands at 8:40 is 20° (Option 1).