Polar coordinates

  • #1

Homework Statement



The angle is 59.1, which is in the second quadrant. Give the angle from the positive x-axis.

Homework Equations





The Attempt at a Solution



180-59.1=120.9

Does that look right?

Thank you very much
 

Answers and Replies

  • #2
1,753
1
The angle is 59.1, which is in the second quadrant. Give the angle from the positive x-axis.
Quadrant one is from 0 to 90 degrees. Quadrant two is 90 to 180.
 
  • #3
Thank you very much

Do you see where I went wrong?

A vector has an x component of -24.5 unites and a y component of 41.0 units. Find the magnitude and direction of this vector (from the positive x-axis)

I got 47.8 by doing (41.0)^2 + (-24.5)^2=c^2
c=47.8 units

In order to find the magnitude I did sin(theta)=41.0/47.8
=59.1 I need the magnitude from the positive x-axis. Would I then take 180-59.1?

Thank you
 

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