Direction of resultant displacement?

  • #1

Homework Statement


http://i287.photobucket.com/albums/ll124… [Broken]

Homework Equations


At the end of the walk, what is the magnitude of the person’s resultant displacement measured from the starting point?

I found this answer to be 595.7697375 m after finding the vertical velocity to be -567.3170013 and the horizontal velocity to be -181.9148158.

The Attempt at a Solution


What is the direction (measured from due west, with counterclockwise positive) of the person’s resultant displacement?
For some reason, I just can not find the angle. I tried to do arctan(vertical velocity/horizontal velocity) which came out to be 72.22112883, but that answer won't work. I then tried -72.22112883 but that won't work either? What am I doing wrong? Please help!
 
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Answers and Replies

  • #2
Would it be 360-72.22112883=287.7788712?
 

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