ECZ 2022 · O-Level Paper 1 — Circle Theorems
In the following diagram, AB and AC are tangents to the circle, centre O. AC and BE produced, meet at D and angle BAC = 54°. Calculate angle (a) ACB.
- A. 27°
- B. 90°
- C. 63°
- D. 54°
Verified working — step 1
AB and AC are tangents from the same external point, so AB = AC.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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