On Sun, 03 Jun 2007 09:02:11 +0200, Leonhard Vogt wrote:
>> Angles are a ratio of two lengths, and are therefore dimensionless units. >> So the square root of an angle is just another angle, in the same units, >> and it requires no special geometric interpretation: the square root of 25 >> degrees (just an angle) is 5 degrees (just another angle). > > But sqrt(25°) = sqrt(25/180*pi) = 5*sqrt(180/pi) != 5° Hmmm... perhaps that's why the author of the "units" program doesn't treat angles as dimensionless when taking square roots. Given that, I withdraw my claim that the sqrt of an angle is just an angle. I can't quite see why it shouldn't be, but the evidence is fairly solid that it isn't. -- Steven -- http://mail.python.org/mailman/listinfo/python-list
