Chapter 1, Problem 57P

Vector $\stackrel{\to }{\text{A}}$ is 3.00 units in length and points along the positive x-axis. Vector $\stackrel{\to }{\text{B}}$ is 4.00 units in length and points along the negative y-axis. Use graphical methods to find the magnitude and direction of the vectors (a) $\stackrel{\to }{\text{A}}$ + $\stackrel{\to }{\text{B}}$ and (b) $\stackrel{\to }{\text{A}}$ − $\stackrel{\to }{\text{B}}$.