A jogger travels a route that has two parts. The first is a displacement of 2.50 km due south, and the second involves a displacement that points due...

A jogger travels a route that has two parts. The first is a displacement of 2.50 km due south, and the second involves a displacement that points due east. (a) The resultant displacement has a magnitude of 3.75 km. What is the magnitude of , and what is the direction of relative to due south? (b) Suppose that had a magnitude of 3.75 km. What then would be the magnitude of , and what is the direction of relative to due south?