Originally Posted by trueblue
Part of my question also should have been which is going to be more accurate, cosine or degrees ?
Really the same -- at least with the Sniper Tools version, both versions are numbered in about 5-degree increments (cosine in cosine values though, obviously) -- so having a cosine out to more decimal places isn't going to be any more accurate. Calculating the cosine from degrees gives a more "precise" number in terms of having lots of numbers after the decimal point, but it's not any more "accurate" due to the measuring limitations of the device.
Not to worry though, it's still has plenty of "resolution" for our needs. If you started to try to be accurate down to the degree or sub-degree, you'd have start worrying about things like where your reticle is dialed when you site the target to take the angle. Fortunately, in the 1000 yard neighborhood, we're only talking an inch or two of difference per five degrees for the cartridges most of us are shooting -- so being super precise with the measurement isn't all that vital.
Anyway, it really does just come down to which is more convenient for you personally to work with.