1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Calculate the Angle of

  1. Sep 25, 2011 #1
    Help me please. I'm not sure how to do this.. Can you tell me about imaginary numbers?
    I'm supposed to calculate the angle of z=6-5i
    How do I do this?
  2. jcsd
  3. Sep 25, 2011 #2


    User Avatar

    Staff: Mentor

    Actually, that is a complex number, with real and imaginary parts. This article should help you figure out how to find the angle between the complex number vector and the x-axis:


  4. Sep 25, 2011 #3


    User Avatar
    Science Advisor

    The "angle" of a complex number, z, more commonly called its "argument", is the angle the line from 0 to z, in the complex plane, makes with the positive real axis.
    [tex]tan(\theta)= \frac{Im(z)}{Re(z)}[/tex]
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook