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JAMB Mathematics 2008 Question 41

Question 41

Data Presentation

On a pie chart, there are six sectors of which four angles are 30°, 45°, 60°, 90° and the remaining two angles are in the ratio 2:1. Find the smaller angles of the remaining two angles.

  1. A.15°
  2. B.30°
  3. C.45°
  4. D.60°
Show the answer and explanation

Answer: C (45°)

Explanation

The remaining angles total 360° − 225° = 135°, split 2 : 1 as 90° and 45°. The smaller is 45°.