This question has been driving me nuts. Please help me!

Bob is at point "A" and is going to move in angle "C" by distance "D".
What is the shortest possible equation could we use to figure out where Bob will be once he moves if we are told A, C, and D? The equation must work no matter what values are assigned to the three variables.

The question can't be answered if it is given in this form. To determine an angle you need to use a reference point or line, for instance bearings with the reference point North ...