ECZ 2023 · O-Level Paper 1 — Circle Theorems

In the following diagram, A, B, C, D and E lie on the circumference of a circle centre O. BD = BE, angle CAD = 18° and angle BEC = 51°. Find (c) angle EBC.

Diagram for ECZ 2023 · O-Level Paper 1
  • A. 69°
  • B. 60°
  • C. 30°
  • D. 51°

Verified working — step 1

From angle BEC = 51°:

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Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.

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