A car is driven 225 km west and then 98 km southwest (45).

Sum the vector components: Dx = 225 * Cos (180) + 78*Cos (225) = - 280.154 km Dy = 225 * Sin (180) + 78*Sin (225) = - 55.154 km displacement: Sqrt (Dx^2+Dy^2) = 285.532 km Arctan (Dy/Dx) = 191.137degrees CCW OR: 11.137 degrees South of West