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WAEC Mathematics 2018 Objective — Question 25

Question 25 of 50 from the West African Examinations Council (WAEC) Mathematics 2018 Objective paper, with the correct answer and a full explanation.

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

  • A. 10mCorrect
  • B. 15m
  • C. 25m
  • D. 30m

Explanation

The angle between the bearing and the north-south line gives sin30°=|YS|/20 → |YS|=10m.

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