A diver explores a shallow reef off the coast of Belize. She initially swims d11 = 79.3 m north, makes a turn to the east, and continues for d22 = 154 m, then follows a big grouper (a kind of fish) for d33 = 74.6 m in the direction = 43.6 north of east. Finally, she swims d44 = 187.2 m south.

Part (a)What is the straight-line distance, in meters, between her initial and final positions?

Part (b)Suppose she wants to swim back to her initial position in a straight line. In what direction should she swim? Express your answer as an angle in degrees north of west.