An airship flies in a direction of 20 degrees North of West at 420 mph. It encounters a 25 mph wind that is heading 17 degrees East of South. Its ground speed of 405.4 mph can be calculated. Equation below is used to find the drift angle of the airship. A. B. 4202 = 252 + 405.42 – 2(25)(405.4)cos(A) C. c2 = 4202 + 405.42 D. The value of the drift angle is .