**visually**.

Another way of concluding that the directions are different is by observing that the angles A and B make with the +x axis are different. For example, here A makes an angle of \(40^{\circ}\), whereas B makes an angle of \(130^{\circ}\).

Another way of concluding that the directions are different is by observing that the angles A and B make with the +x axis are different. For example, here A makes an angle of \(40^{\circ}\), whereas B makes an angle of \(130^{\circ}\).