From:	venturf AT gwis2 DOT circ DOT gwu DOT edu (Umberto Michelucci)
Newsgroups:	comp.os.msdos.djgpp,comp.lang.c
Subject:	Re: trigonometry problem (math.h)
Followup-To:	comp.os.msdos.djgpp,comp.lang.c
Date:	4 Mar 1998 03:26:25 GMT
Organization:	The George Washington University, Washington DC
Lines:	47
Message-ID:	<6dihl1$gri37@beaker.nit.gwu.edu>
References:	<34FC314E DOT A9B3F9D6 AT usa DOT net>
NNTP-Posting-Host:	gwis2.circ.gwu.edu
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

I don't know what x is, but anyway, at the beginning of the file you
should put

	#include <math.h>

then your the function sin () si just this sin(double angle), so your
equation is

	voy=x*sin(angle);

then, when compiling you should link to the library m. So you type -lm to
link. Hoping to be useful.

If you have any other question feel free to ask me.

				Umberto Michelucci

=======================================================================

      //   |     /\   /|    Umberto Michelucci
     //    |    /   \/ |    umich AT gwis2 DOT circ DOT gwu DOT edu
    //     |   /       |
   /_______|  /        |    "The nature can write code up to 10 lines
			     per minute..." (Freely taken from P.Bock)
 
=======================================================================




Jesse Meyer (jesse-meyer AT usa DOT net) wrote:
: I am writing some code to determine the vertical velocity of a
: projectile.

: The physics equation is voy = x (units/second) * sin(angle)

: I want to design a program that will calculate this given the inital
: velocity (x) and the angle.

: I am using DJGPP v2.01 and RHIDE 1.4

: This is basically a programming question because I am a begginer and all
: the books I read don't go into using Trig with C.

: Thanks in advance
: Jesse

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