A Ferris wheel with radius 9.7 m rotates at a constant rate, completing one revolution every 37.8 s. Suppose the Ferris wheel begins to decelerate at the rate of 0.231 rad/s2 when a passenger is at the top of the wheel. Find the magnitude and direction of the passenger's acceleration at that time. I know that the magnitude is 2.25667 m/s^2, but I am not sure about the direction (degrees below direction of travel).