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WAEC Mathematics 2003 Question 49

Question 49

Bearings

The bearing of P from Q is x, where 270° < x < 360°. Find the bearing of Q from P

  1. A.(x − 90)°
  2. B.(x − 270)°
  3. C.(x − 135)°
  4. D.(x − 180)°
Show the answer and explanation

Answer: D ((x − 180)°)

Explanation

A back bearing differs by 180°; since x is more than 180°, the bearing of Q from P is x − 180°.