Displacement: Magnitude and Direction

[kraaaaamos]

Homework Statement

Jim walks 100m due south, 60m due east, and then 20m due north. What is his net
displacement (both magnitude and direction)?

Homework Equations

I know how to find the net displacement by the magnitude of the distance...
using the d = sq. rt ( (x2-x1)^2 + (y2-y1)^2 )

but i don't know how to express the direction?

PLEASE HELP!

The Attempt at a Solution

 

[mgb_phys]

Draw the path on graph paper then draw a line back to the start - the direction is just the angle of this line ( usually given from the horizontal x-axis )
The magnitude is the length of this line.