On 2004 Sep 16 , at 10:43 PM, Scott Hudnall wrote:
Yes - but radians aren't a unit of measure per se, they are multiples or divisions of a fixed ratio.
I agree that the radian should be treated that way but, unfortunately, it is defined as THE unit of angular measure in SI. So, officially it IS a unit ("per se" or otherwise).
The circumference to diameter ratio of a circle is always 22:7 regardless of the unit of measure.
22/7 is only a crude approximation, of course. There are far more precise values of the ratio, none of which can be written out in full because the ration (also known as pi) is an irrational number (an infinite, non-repeating decimal).
Regards, Bill Hooper Fernadina Beach, Florida, USA ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Go Metric America! Or get left behind! ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
