Message-ID: <3AA132DE.E46D023C@acm.org>
From: Eric Sosman <esosman AT acm DOT org>
X-Mailer: Mozilla 4.72 [en] (Win95; U)
X-Accept-Language: en
MIME-Version: 1.0
Newsgroups: comp.os.msdos.djgpp
Subject: Re: trig function?? loopings
References: <Fqeo6.142$nj5 DOT 49880 AT sapphire DOT mtt DOT net>
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Lines: 17
Date: Sat, 03 Mar 2001 23:05:23 GMT
NNTP-Posting-Host: 12.78.198.101
X-Complaints-To: abuse AT worldnet DOT att DOT net
X-Trace: bgtnsc05-news.ops.worldnet.att.net 983660723 12.78.198.101 (Sat, 03 Mar 2001 23:05:23 GMT)
NNTP-Posting-Date: Sat, 03 Mar 2001 23:05:23 GMT
Organization: AT&T Worldnet
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

Stewart wrote:
> 
> I am trying to write a program that prompts the user for a value in degrees
> and outputs the sine, cosine and tangent of the value entered. This is what
> I did:
> [...]
> cosine = cos(degrees*180/M_PI);
> [...]

    I don't know C++ and thus can't answer your primary question.
However, I *do* know a little bit of trigonometry, and can advise
you that the above line will give you the wrong answer for most
values of `degrees' ...

-- 
Eric Sosman
esosman AT acm DOT org