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WAEC Mathematics 2018 Question 25

Question 25

Bearings

Given that Y is 20 m on a bearing of 300° from X, how far south of Y is X?

  1. A.10 m
  2. B.15 m
  3. C.25 m
  4. D.30 m
Show the answer and explanation

Answer: A (10 m)

Explanation

The line XY makes 60° with the north line (360° − 300°), so the north–south distance is 20 cos 60° = 10 m.