**Adding and Subtracting Graphically**

Head-to-tail technique

**15.1** Describe the technique used to add vectors graphically in the coordinate plane.

The sum of two vectors is also a vector, and it is a simple matter to visualize that sum in the coordinate plane through a technique known informally as the head-to-tail method. To add vector **w** to vector **v**, place the initial point of **w** at the terminal point of **v**. The sum **v** + **w** is called the resultant vector; it shares an initial point with **v** and a terminal point with **w**.

In other words, move w so it starts exactly where v ends.

**15.2** Given **v** = <2,0>, calculate **v + v** by plotting the resultant vector in the coordinate plane.

Vector **v** = <2,0> is a horizontal vector with a magnitude of 2 and a direction ...

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