Re: precision on all calcs

To: CALC-TI@LISTS.PPP.TI.COM
Subject: Re: precision on all calcs
From: Neil Padgett <padgett@MCMASTER.CA>
Date: Sun, 22 Jun 1997 23:54:01 GMT
Organization: McMaster University, Hamilton, Ontario, Canada (NewServer)
References: <01bc7e7f$d380a0e0$0f05eec3@big> <33AC7617.557C4947@capitol-college.edu>
Reply-To: Neil Padgett <padgett@MCMASTER.CA>
Xref: paladin.american.edu bit.listserv.calc-ti:14561

Rigor Mortis <ksmith@CAPITOL-COLLEGE.EDU> muttered:

->Here's what i got for 180*sin 1
->TI-85: 3.14143315871
->HP48G: 3.14143315871
->
->Here's what i got for the constant pi
->TI-85: 3.14159265359
->HP48G: 3.14159265359

Perhaps the polynomials used for sin/cos/tan are only accurate to a
certain degree? Still (see my previous message), the compounding of
these errors can yield unreliable or even DEAD WRONG results.

Neil Padgett

->Boogeyman wrote:
->>
->> 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.)

Follow-Ups:

Re: precision on all calcs

From: jeffrey steven bunds <bunds@STUDENTS.UIUC.EDU>

Re: precision on all calcs

From: Geoff H <galois@cyberg8t.com>

References:

precision on all calcs

From: Boogeyman <Boogeyman@EXTERMINATOR.NET>

Re: precision on all calcs

From: Rigor Mortis <ksmith@CAPITOL-COLLEGE.EDU>