ECZ 2021 · GCE Paper 1 — Bearings
In the diagram, A, B and C are points on level ground. The bearing of B from A is 032°, angle ACB = 100° and AC = BC. Find the bearing of A from C.
- A. 072°
- B. 212°
- C. 252°
- D. 288°
Verified working — step 1
Since AC = BC, triangle ABC is isosceles and the base angles are (180° − 100°) ÷ 2 = 40° each, so angle BAC = 40°. The bearing of C from A is therefore 032° + 40° = 072°. The bearing of A from C is the back bearing: 072° + 180° = …The full step-by-step working and final answer are included with Premium — checked against ECZ marking standards.
Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.
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