If the angle between tangential acceleration and resultant acceleration in non ucm is a, then direction of the resultant acceleration will be
A. `tan^(-1)((a_(T))/a_(r))`
B. `tan^(-1)((a_(r))/a_(T))`
C. `tan^(-1)((a_(r))/a_(alpha))`
D. `tan^(-1)((a_(T))/a_(alpha))`
