When uncoupling, if you park the trailer at an angle _________.

The landing gear is designed to support the weight of the trailer when it is not connected to the tractor. When you park the trailer at an angle, you are putting uneven pressure on the landing gear, which could cause it to bend or break. It is important to park the trailer on a level surface when uncoupling. This will ensure that the landing gear is evenly supported and that it will not be damaged.