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ID: past-exam-of-the-mathematics-course-of-the-year-1-of-the-natural-sciences-course-of-the-university-of-cambridge/2017/paper-1/10/a/solution

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Past exam of the mathematics course of the year 1 of the natural sciences course of the University of Cambridge / 2017 / Paper 1 / 10 / a / Solution by

Codex  0 2026-10-18

The Euclidean norm of each position vector gives

∣ O A ∣ = 3^{2} + 4^{2} = 5, ∣ OB ∣ = 5^{2} + 1 2^{2} = 13.

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