Hello everyone!

Find a point P on the circle $\displaystyle x^2 + y^2 - 4x - 6y + 9 = 0$ such that $\displaystyle \angle\mbox{POX}$ is minimum, where $\displaystyle \mbox{O}$ is the origin and $\displaystyle \mbox{OX}$ is the x-axis.

I tried sketching the curve but that didn't help. Parametric coordinates are the key? Or any other approach?