如何用单片机C语言进行三角函数运算？最好给出代码！

#include<math.h>中有。sin();cos()；函数名给数学上的一样

/*--------------------------------------------------------------------------
MATH.H

Prototypes for mathematic functions.
Copyright (c) 1988-2002 Keil Elektronik GmbH and Keil Software, Inc.
All rights reserved.
--------------------------------------------------------------------------*/

#ifndef __MATH_H__
#define __MATH_H__

#pragma SAVE
#pragma REGPARMS
extern char cabs (char val);
extern int abs (int val);
extern long labs (long val);
extern float fabs (float val);
extern float sqrt (float val);
extern float exp (float val);
extern float log (float val);
extern float log10 (float val);
extern float sin (float val);
extern float cos (float val);
extern float tan (float val);
extern float asin (float val);
extern float acos (float val);
extern float atan (float val);
extern float sinh (float val);
extern float cosh (float val);
extern float tanh (float val);
extern float atan2 (float y, float x);

extern float ceil (float val);
extern float floor (float val);
extern float modf (float val, float *n);
extern float fmod (float x, float y);
extern float pow (float x, float y);

#pragma RESTORE

#endif
使用数学头文件math.h，然后调用函数既要可以了。