Question

A disoriented physics professor drives 3.21km north, then 4.69km west, and then 1.69km south.

Use components to find the magnitude of the resultant displacement of this professor.

Use components to find the direction of the resultant displacement of this professor. (Answer should be in terms of degrees west of north)

Answer 1

have you just tried to use Pythagoreans theorem

Answer 2

Okay, I was able to find the magnitude of 4.93 km, not sure what values I use to find the direction of displacement. I know the formula is tan^-1 (ry/rx) but not sure which values to plug into for the ry and rx. Let me know if you have any ideas! Thanks!