A car is traveling 57 miles per hour for 3 hours at a direction 31˚ south of west. Find the exact coordinates of the car after 3 hours.
31° south of west = 180 + 31 = 211°
The (approx) coorrdinates =
[ (3)(57) cos (211°), (3)(57) sin (211°) ] =
[ 171 cos (211°) , 171 sin (211°) ] =
(-146.58, -88.07 )
+28 
