Hey Cineti! I was just wondering, since u seem pree good at maths- could you possibly check if my theory is correct please? http://community.boredofstudies.org/showthread.php?t=302935&p=6317434#post6317434
It says prove for a specific value, so I think u'd just need to sub it in....I tried compound angle to prove for all cases but got nowhere :\