On 3 , 21:43, Gary Herron <[EMAIL PROTECTED]> wrote: > [EMAIL PROTECTED] wrote: > > > angle is dimensionless unit. > > Of course not! Angles have units, commonly either degrees or radians. > > However, sines and cosines, being ratios of two lengths, are unit-less.> To > understand it: sin() can't have dimensioned argument. It is can't > > to be - sin(meters) > > No it's sin(radians) or sin(degrees).> it is difficult to invent what is a > "sqrt from a angle" but it can be. > > I don't know of any name for the units of "sqrt of angle", but that > doesn't invalidate the claim that the value *is* a dimensioned > quantity. In lieu of a name, we'd have to label such a quantity as > "sqrt of degrees" or "sqrt of radians". After all, we do the same > thing for measures of area. We have some units of area like "acre", but > usually we label areas with units like "meters squared" or "square > meters". That's really no stranger than labeling a quantity as "sqrt > of degrees". > > Gary Herron, PhD. > Department of Computer Science > DigiPen Institute of Technology
angle is a ratio of two length and dimensionless. http://en.wikipedia.org/wiki/Angle#Units_of_measure_for_angles only dimensionless values can be a argument of a sine and exponent! Are you discordant? -- http://mail.python.org/mailman/listinfo/python-list
