Chapter 3, Problem 26P

What is the sum of the following four vectors in (a) unit-vector notation, and as (b) a magnitude and (c) an angle?

$\begin{array}{cc}\begin{array}{l}\stackrel{\to }{A}=\left(\text{2}.00\text{ m}\right)\hat{i}+\left(\text{3}.00\text{ m}\right)\hat{j}\\ \stackrel{\to }{C}=\left(-\text{4}.00\text{ m}\right)\hat{i}+\left(-\text{6}.00\text{ m}\right)\hat{j}\end{array}& \begin{array}{l}\stackrel{\to }{B}\text{: 4}.00\text{ m},\text{ at}+\text{65}.0°\\ \stackrel{\to }{D}\text{: 5}.00\text{ m},\text{ at }-\text{235}°\end{array}\end{array}$