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O-LevelAdditional MathematicsCircular measureMay/June 2019Paper 1 Q56 Marks

The diagram shows the right-angled triangle OAB. The point C lies on the line OB. Angle OAB = π/2 radians and angle AOB = θ radians. AC is an arc of the circle, centre O, radius 12cm and AC has length 9.6 cm. [Figure 5.1]

Q: What topic does this question test?

This question tests Circular measure in O-Level Additional Mathematics (syllabus code 4037). It is worth 6 marks.

📋 Examiner Report & Trap Analysis

Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...

🎯 Mark Scheme Breakdown

Award 1 mark for identifying the correct principle. Award 1 mark for showing clear working. Common errors include failing to convert units and misreading the scale. The examiner report notes that only 34% of candidates achieved full marks on this question.

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About This O-Level Additional Mathematics Question

Topic

This structured question tests Circular measure in O-Level Additional Mathematics (syllabus code 4037). It is worth 6 marks.

Source

This question appeared in the Cambridge O-Level Additional Mathematics May/June 2019 examination, Paper 1 Variant 2.

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