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Thread: Complex number help please

  1. #1
    Junior Member
    Jun 2012
    Trinidad and Tobago

    Complex number help please-THREAD MOVED SEE LINK

    Draw the points A : i
    and the point B: (1/(20.5)) + (1/(20.5))i on a argand digram and hence find the argument of A+B i drew it but i am clueles

    Thread moved to complex numbers help please
    Last edited by righteous818; Apr 22nd 2013 at 10:02 AM. Reason: MOVED
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  2. #2
    Junior Member
    Apr 2013
    Green Bay

    Re: Complex number help please

    If $\displaystyle (x, y)$ represents $\displaystyle x + iy$, then the arugment is $\displaystyle \theta $ such that $\displaystyle \tan{\theta} = \frac{y}{x} $ and $\displaystyle 0 \le \theta \le 2\pi $
    Last edited by mathguy25; Apr 22nd 2013 at 12:28 PM.
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