ECZ 2012 · O-Level Paper 1 — Vectors In Two Dimensions
Given that vector a = -86, find the magnitude of a.
- A. 10
- B. 2
- C. 14
- D. 100
Verified working — step 1
The magnitude is sqrt(x2 + y2) = sqrt((-8)2 + 62) = sqrt(64 + 36) = sqrt(100) = …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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