Need help on part b

(17%) Problem 1: A gyroscope slows from an initial rate of 28 rad/s at an angular acceleration of 0.86 rad/s2. O 50% Part (a) How long does it take to come to rest in seconds? t = 32.50 Correct! A 50% Part (b) How many revolutions does it make before stopping? n= sin() cos( tan() OO HOME cotan() asin() acos() atan() acotan() sinh() cosh() tanh() cotanh() + END Degrees Radians BACKSPACE DEL CLEAR Submit Hint Feedback I give up! Feedback: 0% deduction per feedback