Plane a Is Flying at 600 Mph in the Northeast $\degree$

Multiple Choice

Plane A is flying at 600 mph in the northeast direction relative to the Earth. Plane B is flying at 500 mph in the north direction relative to the Earth. What is the direction of motion of Plane B as observed from Plane A?

A) 52.5 $\degree$ N of E
B) 48.2 $\degree$ N of W
C) 37.5 $\degree$ N of W
D) 10.1 $\degree$ N of W