Why are different camera angles used in film?

The angle of the camera helps to push the narrative along by guiding the viewer's eye to what the director has chosen to show. Each angle has the ability to represent or connote a different emotion. Low angles allow a character to appear dominant within the narrative whereas a high angle makes the character appear inferior as if we should look down upon them or feel pity. A Dutch angle, commonly used in German expressionism, suggests mental unease or confusion in the film's subject. This will often create unease for the viewer also as we are used to seeing a horizontal line to be parallel with the bottom of the frame. An establishing shot sets the scene as we typically see the outside of the setting or location of the action.