sin() - math.h

The C library function double sin(double x) returns the sine of a radian angle x.

Syntax

double sin(double x)

Example

#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("The sine of %lf is %lf degrees", x, ret);
   
   return(0);
}

Output / Return Value

The sine of 45.000000 is 0.707107 degrees

Limitations

Alternatives / See Also

Reference