Re: precision on all calcs
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Re: precision on all calcs
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On Sat, 28 Jun 1997, Felonius wrote:
> It wouldn't work anyway. It makes no sense conceptually. The sine of 1 degree gives the y coordinate of a point which represents the intersection of a unit cirlce and the origin. Multiplying this by 180, no matter how accurate the calculation of sine, will never yield pi.
>
> -----Original Message-----
> From: Scott Trimmer [SMTP:strimmer@RIFT.FOO.NET]
> Sent: Friday, June 27, 1997 10:54 PM
> To: CALC-TI@LISTS.PPP.TI.COM
> Subject: Re: precision on all calcs
>
> The reason the answer differs is because of the way the TI-92 does sin.
> It doesn't do sin exactly. If it did, we could have pi exactly, and we
> don't have it quite yet. If you are interested in pi to 1 million places,
> search the internet for Project Gutenberg. Also, how did you know where
> it differs? Is there some way you can determine that on the 92?
> -Scott
> =;)
>
>
> On Sat, 21 Jun 1997, Jeff Tyrrill wrote:
>
> > I just realized something. Even in degree mode, 180*sin(1) does not exactly
> > equal pi. It differs in the ten-thousandth place, and if it were pi, the TI-92
> > would give that as an answer, but it doesn't. Oh well. I'll bet changing to
> > degree mode solves his problem anyway.
> > ________________
> >
> > Jeff Tyrrill's TI Calculator Site: Contains programming tips, undocumented
> > discoveries and tips for power users, and comparisons of the different
> > calculator models.
> > http://tyrrill-ticalc.home.ml.org/
> >
> > TI-Files member: The premiere TI site on the web, with reviews of games and
> > more.
> > http://ti-files.home.ml.org/
> >
> >
> > -----Original Message-----
> > From: Jeff Tyrrill [SMTP:jeff_tyrrill@geocities.com]
> > Sent: Saturday, June 21, 1997 4:51 PM
> > To: CALC-TI@LISTS.PPP.TI.COM
> > Subject: RE: precision on all calcs
> >
> > Change your calculator from the default radian mode to degree mode.
> > ________________
> >
> > Jeff Tyrrill's TI Calculator Site: Contains programming tips, undocumented
> > discoveries and tips for power users, and comparisons of the different
> > calculator models.
> > http://tyrrill-ticalc.home.ml.org/
> >
> > TI-Files member: The premiere TI site on the web, with reviews of games and
> > more.
> > http://ti-files.home.ml.org/
> >
> >
> > -----Original Message-----
> > From: Open discussion of TI Graphing Calculators On Behalf Of Boogeyman
> > Sent: Saturday, June 21, 1997 1:12 PM
> > To: CALC-TI@LISTS.PPP.TI.COM
> > Subject: precision on all calcs
> >
> > When I make 180*sin1 on any of my calcs (80,82,92) I got something weird,
> > but never pi. Does anybody know if it's the case with other calcs (I only
> > go Ti's) ? (It also works with win calc, so I suppose somethin's wrong in
> > all the OS.)
> >
> > TIA
> >
> > Boogeyman
> >
>
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