I'm guessing you mean in Photoshop so you would
1. click the ruler tool
2. drag it along the line you know is straight
3. on the options bar, click straighten
hope this helps :)
Arpeggio. what else can one say to answer this quesiton?
I believe that Hamilton, they were establishing dominance as independent women, stating with their body language that they could handle them selves, and the last one, i am assuming that you ment mean? so i think that the hand reaching out and the broom clutched in the other could symbolize that she was out for revenge, was mad and was cursing someone. ( I have not seen wicked so i am not sure what exactly goes on in that musical lol)
anyway, i hope that this was able to help and that you have a wonderful day!! <3 <3 <3
-Red