The omitting error of a line lies in the South-West quadrant having a length ‘l’ and reduced bearing θ. The latitude ‘L’ and departure ‘D’ are computed by:
1
L = l sin θ and D = - l cos θ
2
L = l cos θ and D = l sin θ
3
L = - l cos θ and D = l sin θ
4
L = - l cos θ and D = - l sin θ