A golfer takes three putts to get the ball into the hole. The first putt displaces the ball 3.48 m north, the second 1.54 m southeast, and the third 0.982 m southwest. What are (a) the magnitude and (b) the angle between the direction of the displacement needed to get the ball into the hole in just one putt and the direction due east?

I am really having problems with this one. Can someone show step by step process of solving this problem?

I am SAS btw.