Chapter 9.4, Problem 68AYU

To determine

To find: The direction angle of $v$

Answer to Problem 68AYU

Solution:

  ${326.3}^{°}$

Explanation of Solution

Given:

  $v=6i-4j$

Calculation:

The direction angle $\alpha$ of $v=6i-4j$ can be found by solving tan $\alpha =\frac{-4}{6}=-\frac{2}{3}.$ The direction angle is $\alpha ={326.3}^{°},$ since $v$ lies in the fourth quadrant.