Ma Be wrote: > Joseph B. Reid wrote: >>The right angle, i.e. 900, would become 1.570 796 327.......rad. Try >>selling that to machinists. > >Indeed. The rad is only good and useful when working with equations in >a... "math environment", so to speak. There's unfortunately nothing >practical about it.
Yes there is. It is so useful that it is the basis of the default unit of angle used by NATO (the 'mil') 6400 mil = 2000pi mrad = 360 deg 1 mil ~ 1 mrad It is useful to military because 1 mil ~ 1 metre at 1 km NATO compasses, binoculars and sights are all marked in mil.
