Why are math libraries consistently treated as space hogs if you don't keep them as barebones as possible? I've had sinDeg/cosDeg overloads for a while and I do

Why are math libraries consistently treated as space hogs if you don't keep them as barebones as possible? I've had sinDeg/cosDeg overloads for a while and I don't see why they can't be built into the base library; the same would go for a sinT/cosT that takes turns instead of radians or degrees. Why do we have to pick one and meticulously avoid having multiple?