A shopper pushes a cart 38 m south down one aisle and then turns 90.0° west and moves 25 m. He then makes another 90.0° turn and moves 17 m.

(a) What is the largest possible displacement of the shopper?
m ° counterclockwise from west

(b) What is the smallest possible displacement of the shopper?
m ° counterclockwise from west