4024/12 Oct/Nov 2020, Question 8: Angles at a Point and on a Line
Cambridge O Level Mathematics 4024 · Paper 12 (Non-calculator) · Non-calculator · 2 marks
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The question, in short
Clock diagram shows 2.30 pm; calculate the reflex angle between the hour and minute hands.
Summarised in our own words. Use the official paper for the exact wording and the diagram.
Solution · 2 marks
- 1Each hour mark is 360 ÷ 12 = 30°
- 2At 2.30 the minute hand points at 6 and the hour hand is halfway between 2 and 3
- 3Angle between hands = 3.5 × 30 = 105°
- 4Reflex angle = 360 − 105 = 255°
Answer255°
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