Answer to Question #144503 in Analytic Geometry for Hussaina

Question

Find the magnitude of this vector \\(a= -i+2j +2k\\)

Answer 1

$\vec{a}=-\vec{i}+2\vec{j}+2\vec{k}$

$|\vec{a}|=\sqrt{(-1)^2+(2)^2+(2)^2}=3$

The magnitude of this vector $\vec{a}$ is $|\vec{a}|=3.$