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#1 2005-10-01 13:14:25
- mikau
- Super Member
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I need sine, cosine and tangent functions for C++ :-(
I'm writing some awsome programs using math but I really really really need access to sine, cosine and tangent functions, also I really could use arcsin, arccos, and arctan, but arctangent the most since I need to convert from rectangular form to polar form and back.
Someone gave me a link to the formulas for sine, cosine and tangent, which was great and they appear to work, but they call a lot of factorials and very large numbers "270^5" :-O
If anyone knows where I can get a copy of the source code for functions for sine, cosine, tangent, arcsine, etc. so I can just copy the definition into my program and call on it when I need it. It would be a MAJOR help!
A logarithm is just a misspelled algorithm.
#3 2005-10-03 08:42:31
- MathsIsFun
- Administrator
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Re: I need sine, cosine and tangent functions for C++ :-(
For performance I would use the standard include "math.h" - it has sin cos and tan.
Example:
#include <stdio.h>
#include <math.h>
#define PI 3.141592654
int main () {
double angle;
angle = 10;
double ans;
ans = sin (angle*PI/180);
printf ("Ans = %lf ", ans );
return 0;
}
Or did you need more accuracy or something?
"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman