A car travels 3.0km due south and then 4.0km due west.what is it displacement from the starting point?

Answer 1

X = -4 km.
Y = -3.0 km.
Q3.

Tan A = Y/X = -3/-4 = 0.750
A = 36.9o S of W. = 216.9o CCW. = Direction.

Disp. = X/Cos216.9 = -4/Cos216.9=5.0 km.

Answer 2

How do you get A=36.90