The invention relates to a method for assisting a driver of a motor vehicle (1) in maneuvering the motor vehicle (1) with a trailer (3), wherein image data is captured from an environmental region (12) of the motor vehicle (1) by means of at least one vehicle-side camera (5) and by means of at least one trailer-side camera (10) and an image (B) of the environmental region (12) is created for displaying on a vehicle-side display device (14) depending on the captured image data, wherein a perspective (P1, P2), from which the environmental region (12) is displayed in the image (B), is determined depending on a pivot angle (17) between the trailer (3) and the motor vehicle (1). The invention additionally relates to a driver assistance system (2) as well as to a vehicle/trailer combination with a motor vehicle (1), a trailer (3) and a driver assistance system (2).