O-LevelAdditional MathematicsCircular measureMay/June 2019Paper 2 Q89 Marks
The diagram shows a right-angled triangle ABC with AB = 8cm and angle ABC = π/2 radians. The points D and E lie on AC and BC respectively. BAD and ECD are sectors of the circles with centres A and C respectively. Angle BAD = 2π/9 radians. [Figure 8.1]
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