## Calculus: Early Transcendentals (2nd Edition)

$|v| = \langle v_1,v_2\rangle = v_1\textbf{i} + v_2\textbf{j}$
The vector $\langle a,b,c \rangle$ can be rewritten as $a\textbf{i} + b \textbf{j} + c\textbf{k}$