Am I legally protected to fire at someone trespassing on my property?

I live in Arizona and if I am correct, I have the right to protect my property with any means necessary within my household against an intruder...Yes? However, I am uncertain about the laws surrounding shots fired at burglers outside my home but ON my land (ie,. attempts to enter through a window or doorway). Recently I have experienced TWO attempts at breaking into my home within the past month (It is secured by an alarm system)... I have since purchased a firearm for additional protection. What should I know about the laws in Arizona regarding this matter?? Thanks for any help you can provide!