You drive a car 1600ft to the east then 2600ft to the north

Question

Solve the all parts of given problem:

Problem: You drive a car 1600ft to the east, then 2600ft to the north. The trip took 3.5 minutes.

Part A: What was the direction of your average velocity?

Part B: What was the magnitude of your average velocity?

Please show how you obtained the direction of your average velocity.