Polar points in space

A point in space can be determined by its' polar coordinates.

On the figure above, P's polar coordinates are .

is the lenght |OP|. is the angle between the z-axe and the line OP, and is the angle between the x-axes and the line OQ.

Two areas in the space is given by polar coordinates:

Find a parametrization for A and B and

I'm so lost in this, I would really appreciate any help