Question 21
The diagram shows the positions of three ships A, B and C.
Diagram NOT accurately drawn
B is 234 km due north of A.
C is 356 km due east of A.
Work out the bearing of B from C.
Give your answer correct to the nearest degree.
Edexcel IGCSE Math A Foundation 4.8.C Two-Dimensional Trigonometry Problems
Practise selecting sine, cosine or tangent in multi-step triangles, bearings and composite-shape problems.
How this is tested
- identify a right triangle and label opposite, adjacent and hypotenuse for the target angle
- use a bearing or parallel-line fact to derive the angle needed for trigonometry
- carry an unrounded trigonometric result into a second perimeter or area calculation