find the magnitude and direction m=(2,9)
\(\bf \begin{array}{llll} m=&\ \textless \ &2,&9\ \textgreater \ \\ &&a&b \end{array}\quad \begin{cases} magnitude=\sqrt{a^2+b^2} \\ \quad \\ direction=tan^{-1}\left( \frac{b}{a} \right) \end{cases}\)