Spawned from the comments in this question, does the Snap Shot feat allow AoOs outside of Threatened range against the target of Greater Trip?
While wielding a ranged weapon with which you have Weapon Focus, you threaten squares within 5 feet of you. You can make attacks of opportunity with that ranged weapon. You do not provoke attacks of opportunity when making a ranged attack as an attack of opportunity.
You receive a +2 bonus on checks made to trip a foe. This bonus stacks with the bonus granted by Improved Trip. Whenever you successfully trip an opponent, that opponent provokes attacks of opportunity.
The specific case cited has the ranger character making AoOs against enemies tripped by a partner with Greater Trip up to 1000ft away, but the question holds for much shorter distances. If a character has Snap Shot, and no other feats which increase their Threatened area, could that character make AoOs against a creature tripped with Greater Trip 30' away?