File talk:3rd roots of unity.svg
This picture is wrong. W should be in the upper quadrant, and W^2 should be in the lower quadrant. One can see from this that the argument of a complex number is measured anti-clockwise from the positive real axis. The third root of unity has argument 2/3*pi. As an angle of pi equates to 180 degrees, and angle less than pi must lie above the real axis. Or am I missing something?--Acer4666 (talk) 14:17, 25 February 2012 (UTC)