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Vectors

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Question 162

Given that ∣3i+aj∣=3k|3\mathbf{i} + a\mathbf{j}| = 3\sqrt{k}∣3i+aj∣=3k​, where k k\,k is a constant and k>1k>1k>1

Find the value of a a\,a in terms of kkk

[2]
Markscheme

Vectors Questions

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

284 exam-style questions on Edexcel A Level Maths Vectors, covering 11.1 Vectors, 11.2 Representing Vectors, 11.3 Magnitude and Direction, 11.4 Position Vectors, 11.5 Solving Geometric Problems, and 11.6 Modelling with Vectors. Each one has a worked solution and a mark scheme showing where the marks go.

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