0580 P22 - Nov 2016 - Q16 - 4 marks
15028
\(\overrightarrow{BC}=\begin{pmatrix}2\\3\end{pmatrix},\quad\overrightarrow{BA}=\begin{pmatrix}-5\\6\end{pmatrix}\).
(a) Find \(\overrightarrow{CA}\). [2]
(b) Calculate \(|\overrightarrow{BA}|\). [2]
