The initial velocity of a car, , is 45 km/h in the positive x direction. The final velocit...

The initial velocity of a car, , is 45 km/h in the positive x direction. The final velocity of the car, , is 66, km/h in a direction that points 75° above the positive x axis. (a) Sketch the vectors , and . (b) Find the magnitude and direction of the change in velocity, .