HP Prime not Computing Correctly

[ijabbott]

Personally, I would prefer it if the argument of the normal trig functions were always in radians, and there were separate trig functions (e.g. sind(x), cosd(x), tand(x)) for angles in degrees. The angle mode setting would then just determine which functions the keys map to by default. (I'm not sure how arguments with attached angle units should then be handled when used with the wrong trig functions though.)