Circle Coordinates Interactive
Choose a point on the real circle.
As the point moves, \(\cos t\) and \(\sin t\) change as coordinate functions.
These functions give the projective map \(t \mapsto [1:\cos t:\sin t].\)
Choose a point on the real circle.
As the point moves, \(\cos t\) and \(\sin t\) change as coordinate functions.
These functions give the projective map \(t \mapsto [1:\cos t:\sin t].\)