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JAMB Mathematics 2003 Question 30

Question 30

Bearings

An aeroplane flies due north from airports P to Q and then flies due east to R. If Q is euidistant from P and R, find the bearing of P from R.

  1. A.090°
  2. B.135°
  3. C.225°
  4. D.270°
Show the answer and explanation

Answer: C (225°)

Explanation

PQR is a right-angled isosceles triangle, so from R the line to P points 45° south of due west, a bearing of 180° + 45° = 225°.