ECZ 2021 · GCE Paper 1 — Vectors In Two Dimensions
The components of the vectors OA and OB are 23 and 42 respectively. Write BA as a column vector.
- A. 2−1
- B. −21
- C. 65
- D. −2−1
Verified working — step 1
BA runs from B to A, so BA = (position of A) - (position of B) - the destination's vector comes first.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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