
All points of the form
lie on the unit circle. The ones on the same side of the line
x+y=1 as (3,2) are on the red part of the unit circle pictured
above, not on the green part.
All the points on the red part have non-negative x and y coordinates
all between 0 and 1, inclusively. So
is a first quadrant
angle or
, for any integer n.
Edwin