components to find the direction of the resultant displacement!!!!!!!!!!!?

Question

anonymous · Answer

person drives 3.24km north, then 4.79km west, and then 1.66km south.

mathmale · Answer

The resultant vector would be in the xy plane and would look like this:
<-4.79 km, 3.24 km - 1.66 km>.  Could you explain why?
How would you "find the direction" of this resultant vector?

anonymous · Answer

because west would be on the left of the origin rightlol 
find the direction is like tan-1 ?

mathmale · Answer

Simplify the resultant vector components first, please.  
The resultant vector will be in Quadrant 2.  Using this fact, find the angle, as measured from the positive x-axis, and measured in degrees, to the resultant vector in Quadrant 2.  If this is confusing, please consider sketching a diagram.