Following RF pulse Bi (t) = B1 cos(wot + " ) i + B1 sin(wot + ") j in the stationary frame of reference has resulted in flip of magnetic moment vector onto the xy plane (90 flip). What is the location of May in the rotating frame of reference immediately after completion of RF pulse (before dephasing) assuming that initial magnetic moment vector at balanced state takes the form of M = M k ? -0 O Mry = M i -+0 O Mry = -M, cos(7/6). i' + M, sin(7/3). j' O Mry = M j' -$0 O Mry = M. cos(7/3). i + M , sin(w/6). j