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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

    berkeman

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    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:

    http://en.wikipedia.org/wiki/Complex_numbers

    .
     
  4. Sep 25, 2011 #3

    HallsofIvy

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    Staff Emeritus
    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]
     
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