Could use some help on this... as i remember it seemed pretty easy, but doesnt it always?

$\displaystyle 1 - \sqrt 3i \longrightarrow polar $

$\displaystyle \sqrt 5 + i \longrightarrow polar $

$\displaystyle 2(cos (\pi/6) + sin (\pi/6i) \longrightarrow rect $

some direction would be helpful. thanks...