It uses more than just the pythagorean the theorem.It compensates for arc as well I believe.Which makes it a great product for hunting mountains.


The problem is that from hunting stand heigts,all this is way over rated.The biggest difference in a triangle is when the angle is increased,meaning,you have to be shooting very close to straight down for it to take effect.The problem with that is that the distance from your stand is so close it probably doesn't matter anyway.



When you increase the distance from the stand,the angle flattens out dramatically so very little compensation,IF ANY is needed.