ECZ 2013 · O-Level Paper 1 — Trigonometry
A 10 m ladder rests against a vertical wall with its foot 6 m from the wall. How far up the wall does the ladder reach?
- A. 4 m
- B. 6 m
- C. 11.7 m
- D. 8 m
Verified working — step 1
By Pythagoras, height = sqrt(102 - 62) = sqrt(100 - 36) = sqrt(64) = …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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