[EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > On 3 , 22:07, "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote: > > > > angle is a ratio of two length and > >dimensionless.http://en.wikipedia.org/wiki/Angle#Units_of_measure_for_ang > >les > > > > only dimensionless values can be a argument of a sine and exponent! > > Are you discordant? > > if you are discordant read more :P : > sine is a dimensionless value. > if we expand sine in taylor series sin(x) = x - (x^3)/6 + (x^5)/120 > etc. > you can see that sin can be dimensionless only if x is dimensionless > too. > > I am a professional physicist and a know about what I talk
Lots of people are confused by the concept of "degrees" -- your Taylor series, of course, intrinsically assumes x is "in radians" (which of course IS how angles "truly are"). I blame the Babylonians for that confusion just as much as for the clunky base-60 that intrudes in our ordinary time reckoning...! Alex -- http://mail.python.org/mailman/listinfo/python-list
