Author Topic: Argand Diagrams =/ !! (again)  (Read 755 times)

Offline Tammet

  • Newbie
  • *
  • Posts: 12
  • Reputation: 28
  • Gender: Male
Argand Diagrams =/ !! (again)
« on: May 20, 2010, 08:01:41 pm »
Ok i know Arg(z) is the angle made with the positive direction of the x-axis.
But can someone tell me how to do this.

"Find the the greatest value of arg z for points on (this locus) |z-u|= 2."
 u = 1+2i

So i drew a circle center (1,2) radius=2. But i dunno how to find the maximum argument.
(the answer is 126.9)

Thanks.