O-LevelAdditional MathematicsCircular measureOct/Nov 2023Paper 1 Q107 Marks
In this question all lengths are in centimetres and all angles are in radians. [Figure 10.1] The diagram shows a badge which consists of a minor sector, OAB, of the circle with centre O and radius 12, and a kite OBCD, where OB = OD and CD = CB. The arc AB has length 27. The line OB is perpendicular to the line CB, and COA is a straight line.
📋 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.
🔒
Unlock the Examiner's Analysis
Sign up for free to reveal the full examiner report, trap analysis, and mark scheme breakdown for this question.
Sign Up Free to Unlock →Join thousands of Cambridge students already using Oracle Prep