Hi angeliclight, the function to do that is Transform / Array / Circular.
That will handle replicating your object by rotation around a center point. You just tell it the number of items that you want to have and it figures out the spacing for you, no math required.
If that's all it is, well, I feel like one of those special kids whose parents got him a super calculator for Trig class while I had to "suffer" with a measly pencil and paper...
Love the wireframe view in C4D - you can see the super clean meshes there. Nobody would ever guess that those clean meshes came from a NURBS model, they look like someone spent hours and hours arranging the points by hand!