In triangle DEFDEFDEF, DE⃗=1i−2j+2k\vec{DE} = 1\mathbf{i} - 2\mathbf{j} + 2\mathbf{k}DE=1i−2j+2k, DF⃗=3i+4j−k\vec{DF} = 3\mathbf{i} + 4\mathbf{j} - \mathbf{k}DF=3i+4j−k
Find the vector EF⃗\vec{EF}EF
Find the length of the line DEDEDE
Practise AQA A Level Maths 1.13 J: Vectors with exam-style questions for A Level Maths. 122 questions covering 1.13.1 Vectors in two and three dimensions, 1.13.2 Magnitude and direction of a vector, 1.13.3 Vector arithmetic, 1.13.4 Position vectors, and 1.13.5 Vectors to solve problems, matched to the AQA A Level Maths (7357) specification and written in Paper 1, Paper 2 and Paper 3 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.
