Bill Allombert on Thu, 30 Jun 2005 19:14:52 +0200 |
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Re: Sin(x) |
On Thu, Jun 30, 2005 at 06:33:11PM +0200, Sascha Rissel wrote: > Hello, > > I have a qustion about the sin(x)-function. > > Why is cos(Pi) = -1 as it should be, but sin(Pi) = -5.04870979 E-29 and > not exactly 0? > Other values of sin(x) are also a bit "out of place"... cos(Pi) is not really -1: ? cos(Pi)+1 %3 = 1.2744735289059618216 E-57 The Pi function returns only an approximation of Pi to the current precision, so the result can only be accurate to that number of decimals. Cheers, Bill.