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Edexcel IGCSE Math A Higher 5.1.HE magnitude of a vector

Edexcel IGCSE Math A Higher 5.1.HE magnitude of a vector
Edexcel IGCSE Math A syllabusMath A 4MA1First assessment 2018

Practise vector-magnitude questions by forming the vector components and applying Pythagoras to find the exact or numerical length.

How this is tested

  • Calculate the magnitude of a vector from horizontal and vertical components.
  • Use Pythagoras to find an exact vector length in a trapezium or grid diagram.

Question 17

Here are two vectors.

FG→=(−52)HG→=(414)\overrightarrow{F G}=\binom{-5}{2} \quad \overrightarrow{H G}=\binom{4}{14}

Calculate the magnitude of the vector HF→\overrightarrow{H F}