O-LevelAdditional MathematicsCircular measure4037/11 · May/June 2013 · Q231 Mark

The diagram shows a square ABCD of side 16 cm. M is the mid-point of AB. The points E and F are on AD and BC respectively such that AE = BF = 6 cm. EF is an arc of the circle centre M, such that angle EMF is θ radians. Which of the following is the value of θ, correct to 3 decimal places?

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A1.287 radians

B1.571 radians

C1.855 radians

D2.094 radians

✓ Correct answer

C: 1.855 radians

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Topic: Circular measure, O-Level Additional Mathematics (syllabus 4037). Multiple choice, 1 mark.
Source: O-Level Additional Mathematics, May/June 2013 Paper 1 Variant 1, question 23.

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