Hanging sign question - equillibrium (with picture)

[strangemagic]

http://img355.imageshack.us/my.php?image=picture12ri5.jpg

a beam is coming vertically from the wall, and a cord is coming diagonally from the wall. they are both supporting a signhanging from the end. what is the angle of the cord?

i don't even know where to begin.

 

[PhanthomJay]

I don't believe you worded the problem correctly. It appears it asking you to find theta if the cord tension is at its maximum rating of 650N.