hahaha that was my fault. i originally sent that post from my phone and didn't think it through fully. i was referring to the pictures of the calculators posted by Cantin. it doesn't matter whether or not a calculator is in radians or degrees or the third program (never used so its not important to me currently). since the original equation does not use any form of pi, then the modes do not matter. apparently everybody was taught a different rule of thumb in this (BEDMAS, PEMDAS, or any other method) but they all follow the same pattern.