In this video you are shown the vector triangle for addition and subtraction of vectors in 2 dimensions.

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Vector Addition and Subtraction (2D version) : ExamSolutions Maths Revision

Worked Examples

I would encourage you to try the following examples as they demonstrate common methods with vectors and act as revision of the topics looked at so far.

Example 1

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Vectors : Example 1 : ExamSolutions

Example 2

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Vectors : Example 2 : ExamSolutions