C library functions - sin ()

C standard library - <math.h>

description

C library functiondouble sin (double x) Returns the sine of xradians.

statement

Here is the sin () function's declaration.

double sin(double x)

parameter

• x - floating-point value represents an angle in radians.

return value

This function returns the sine of x.

Examples

The following example demonstrates the sin () function is used.

#include <stdio.h>
#include <math.h>

#define PI 3.14159265

int main ()
{
   double x, ret, val;

   x = 45.0;
   val = PI / 180;
   ret = sin(x*val);
   printf("%lf 的正弦是 %lf 度", x, ret);
   
   return(0);
}

Let's compile and run the above program, which will result in the following:

45.000000 的正弦是 0.707107 度

C standard library - <math.h>