Answer:

Step-by-step explanation:
velocity of river with respect to ground = 4 mi/h south

Velocity of swimmer with respect to river = 2 mi/h east

According to the formula of relative velocity


Where, V(S,G) be the velocity of swimmer with respect to ground, it is true velocity of swimmer.

Answer:
110 degrees
Step-by-step explanation:
I don't know if that is correct.
40+40+40= 120. If each inch is 40 then add 40 3 times