Exercise 4 Page 605

We are given the vectors $\stackrel{\rightharpoonup }{y}$ and $\stackrel{\rightharpoonup }{z}.$

We want to find the difference $\stackrel{\rightharpoonup }{y}-\stackrel{\rightharpoonup }{z}.$ To do so we can use the Triangle Method. First, we will draw $\text{-}\stackrel{\rightharpoonup }{z}$ and translate it so that it touches the tip of $\stackrel{\rightharpoonup }{y}.$

Now, we will draw the resultant vector from the tail of $\stackrel{\rightharpoonup }{y}$ to the tip of $\text{-}\stackrel{\rightharpoonup }{z}.$