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Question 42

In triangle $A B C$ , $AB⃗=4i+2j\vec{AB} = 4\mathbf{i} + 2\mathbf{j}$ , $AC⃗=6i+6j\vec{AC} = 6\mathbf{i} + 6\mathbf{j}$

Find the vector $BC⃗\vec{BC}$

[2]

Find the length of the line $A B$

[2]

Hence find the exact value of $cos⁡ABC\cos ABC$

[3]

Markscheme

Vectors Questions

A Level
Maths
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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