Question

Use the Pythagoras theorem and give the diagram of no 1 adaobi walks 2km due west and 2km due south calculate the displacement of the girl

Answer 1

x motion = -2

y motion = -2
magnitude of displacement = sqrt (2^2+2^2) = sqrt 8 = 2 sqrt 2 = approximately 2.828
tan direction = -2/-2 = 1
direction = 45 deg west of south or 180 + 45 = 225 on compass