The director has used close up camera angle to show people the characters and there face expressions because of what they are like in the movie Frozen. The director might have also used close up because the audience will want to see there emotions.
The director has used wide shot because it wants to show people the main characters and how they are all together. The director might have also used this because he/she may want the audience to see them all and there expressions.
The director has used birds eye view because they are all looking up at the sky and they all have the same face expressions sort of.
The director has used extreme close up because he/she is showing the audience that this is the princess is the bad person but she is actually really nice and is only bad because she is trying to protect her little sister.
The director has used worms eye view because he/she is giving a shot of how small or tall someone or something is.