Solve the all parts of given question:
Question: A passenger walks from one side of a ferry to the other as it approaches a dock. The passenger's v=1.55 m/s North relative to the ferry and 4.50 m/s at an angle of 30 degrees West of North relative to the water.
Part A: What is the magnitude of the ferry's velocity relative to the water?
Part B: What is the direction of the ferry's velocity relative to the water?
If possible just a brief explanation how you got the answer?