Gary Herron wrote: > 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). >
NO! The radian is defined as the ratio of an arc of circumfence of a circle to the radius of the circle and is therefore *dimensionless*. End of story. http://en.wikipedia.org/wiki/Radian and esp. http://en.wikipedia.org/wiki/Radian#Dimensional_analysis *grunt* -- http://mail.python.org/mailman/listinfo/python-list
