Create a point using spherical coordinates. The first three inputs represent the coordinate values, i.e. an $xy$ angle, a $z$ angle, and a radius, while the fourth input defines the space in which these coordinates live.

The $xy$ angle coordinate represents an anti-clockwise rotation within the coordinate space plane. The $z$ angle goes from $-90°$ on the sphere south pole, to $+90°$ on the north pole.