ORIGINAL: KodiakArcher
ORIGINAL: MeanV2
It takes some extreme situations before it is necessary. All it takes is a little math to figurethat out.
Dan
Mountain goat at 45 yards by your rangefinder at about what you figure to be a 55 degree down angle. What do you shoot him for? (Jeopardy music in background...)



Is your angle estimate accurate? Do you carry cosines in your pocket? Point is that it's more than just a little math on top of a bunch of other stuff you've got to stop from going wrong. They are definitely worth their weight and expense in those extreme circumstances.
ps.) (COS 55)(45) = 26 Hard to trust it but if you do... Bam! dead goat.
Correct me if I'm wrong, but it seems to me that every drawingthat I have seen that explains the " ARC" is a hunter in a tree stand, down to the tree base, and out to the target. If I'm not mistaken, that creates a " Right Triangle". I may be mistaken, as it has been alot of years since I have taken Geometry, but wouldn't the distance from the hunter in the stand to the target represent the " Hypotenuse" ( ? ), of the Right Triangle, which is found by adding the distance from the hunter to the base of the tree, to the distance from the base of the tree to the target? If so, then the distance should be longer, not shorter. I think it's the Pythagorean Theorum ( ? )- A2 + B2= C2 ?