The points R R\,R and S S\,S have position vectors i−2j+4k\mathbf{i} - 2\mathbf{j} + 4\mathbf{k}i−2j+4k and 5i+2j+2k5\mathbf{i} + 2\mathbf{j} + 2\mathbf{k}5i+2j+2k respectively.
Find the vector RS→\overrightarrow{RS}RS
Find ∣RS→∣|\overrightarrow{RS}|∣RS∣
42 exam-style questions on OCR A Level Maths 1.10.2 Vectors in three dimensions (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.