Chapter 9.1, Problem 2E

CONCEPTS

2. (a) The length of a vector $\text{w}=\langle a_1,a_2\rangle$ is $\left|\text{w}\right|=$________, so the length of the vector u in Figure II is $\left|\text{u}\right|=$__________.

(b) If we know the length $\left|\text{w}\right|$ and direction $\theta$ of a vector w, then we can express the vector in component form as $\text{w}=\langle \boxed{},\boxed{}\rangle$.