<span>It helps establish the fundamental role of the creative artist in society.</span>
Banquo's ghost appears in act 3, scene 4, and sits down in Macbeth's place. The fact that Banquo's ghost chooses to sit in the king's seat is significant because it foreshadows how Banquo's descendants will inherit the throne, as the witches predicted.
He is angry because he doesn’t like getting tricked