如何用单片机C语言进行三角函数运算？最好给出代码！ 请问C语言中怎么计算三角函数？要全部的程序代码！谢谢！
\u5982\u4f55\u7528C\u8bed\u8a00\u5b9e\u73b0\u4e09\u89d2\u51fd\u6570\u7684\u8ba1\u7b97math.h\u91cc\u7684\u4e09\u89d2\u51fd\u6570\u7528\u7684\u5355\u4f4d\u662f\u5f27\u5ea6\uff0c\u4f60\u8c8c\u4f3c\u9519\u5728\u8fd9\u91cc\u3002 \u7b54\u6848\u8865\u5145 Example
/* SINCOS.C: This program displays the sine, hyperbolic
* sine, cosine, and hyperbolic cosine of pi / 2.
*/
#include
#include
void main( void )
{
double pi = 3.1415926535;
double x, y;
x = pi / 2;
y = sin( x );
printf( "sin( %f ) = %f\n", x, y );
y = sinh( x );
printf( "sinh( %f ) = %f\n",x, y );
y = cos( x );
printf( "cos( %f ) = %f\n", x, y );
y = cosh( x );
printf( "cosh( %f ) = %f\n",x, y );
} \u7b54\u6848\u8865\u5145 Output
sin( 1.570796 ) = 1.000000
sinh( 1.570796 ) = 2.301299
cos( 1.570796 ) = 0.000000
cosh( 1.570796 ) = 2.509178
Parameter
x
Angle in radians
\u5e93\u51fd\u6570\u5c31\u6709\u554a\uff01
#include
#include
void main()
{
float a,Sin,Cos,Tan,Cot;
printf("\u8bf7\u8f93\u5165\u4f60\u8981\u6c42\u4e09\u89d2\u51fd\u6570\u7684\u53d8\u91cf");
scanf("%f" ,&a);
Sin=sin(a); //\u8c03\u7528\u5e93\u51fd\u6570\uff0c\u8c2d\u6d69\u5f3a\u4e66\u540e\u9762\u6709
Cos=sqrt(1-Sin*Sin);
tan=Sin/Cos;
cot=1/Tan;// \u5176\u4ed6\u7684\u53cd\u4e09\u89d2\u51fd\u6570\u4e5f\u662f\u8c03\u7528\u5e93\u51fd\u6570\u7684\u3002\u4f60\u81ea\u5df1\u641e\u5b9a\u5427\uff01
printf("%f,%f,%f,%f" ,Sin,Cos,Tan,Cot);
}
#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。
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