# Complex number help please

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• Apr 22nd 2013, 09:49 AM
righteous818
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 http://mathhelpforum.com/pre-calculu...tml#post783728
• Apr 22nd 2013, 12:19 PM
mathguy25
Re: Complex number help please
If $(x, y)$ represents $x + iy$, then the arugment is $\theta$ such that $\tan{\theta} = \frac{y}{x}$ and $0 \le \theta \le 2\pi$