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Question 46

In triangle $A B C$ , $AB⃗=6i+2j−k\vec{AB} = 6\mathbf{i} + 2\mathbf{j} - \mathbf{k}$ , $AC⃗=8i−5j+4k\vec{AC} = 8\mathbf{i} - 5\mathbf{j} + 4\mathbf{k}$

a.

Find the vector $BC⃗\vec{BC}$

[3]

b.

Find the length of the line $A B$

[3]

Vectors Questions

A Level
Maths
Vectors