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Question 160

Given that ∣22i+kj+5k∣=7|2\sqrt{2}\mathbf{i} + k\mathbf{j} + \sqrt{5}\mathbf{k}| = 7∣22​i+kj+5​k∣=7

Find the two possible values of kkk, giving your answers in exact form.

[3]
Markscheme

Vectors Questions

  1. A Level
  2. /Maths
  3. /Vectors

309 exam-style questions on Edexcel A Level Maths Vectors, covering 12.1 3D Coordinates, 12.2 Vectors in 3D, 12.3 Solving Geometric Problems, and 12.4 Application to Mechanics. Each one has a worked solution and a mark scheme showing where the marks go.

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