Two simple harmonic are represented by the equation `y_(1)=0.1 sin (100pi+(pi)/3) and y_(2)=0.1 cos pit`.
The phase difference of the velocity of particle 1 with respect to the velocity of particle 2 is.
A. `(-pi)/3`
B. `(pi)/6`
C. `(-pi)/6`
D. `(pi)/3`