A wave has an amplitude equal to 4.0m, angular speed (frac{1}{3} pi) rads-1 and phase angle (frac{2}{3} pi) rad. The displacement y of the wave particle is given as
-
A.
y = 4 sin (frac{pi}{3})(t + 2) -
B.
y = 4 sin (frac{pi}{3})(t + (frac{2}{pi}) -
C.
y = 4 sin (frac{pi}{3} (2t + 1)) -
D.
y = 4 sin (frac{pi}{3} (t + 2)