Is there a way to rotate multiple copies of an object at once instead of having to do it one at a time. Example, teeth on a gear. I imagine it would copy the first rotated object to get the angle of rotation and typing in the number of copies to rotate. It makes it efficient and only adds a step of typing in the number of copies.
@eeek
Use Transform > Move\Rotate then Select all the Gear Teeth to be Copied
Next move the Control/Centre Point to the Axis.centre of Rotation
Before dragging the appropriate Arrow click on the very small 
[Copy] Icon
If necessary Type in the Angle Value required