double sin(double x);
double sin (double x); float sinf (float x);long double sinl (long double x);
double sin (double x); float sin (float x);long double sin (long double x);
double sin (double x); float sin (float x);long double sin (long double x); double sin (T x); // additional overloads for integral types
<cmath> ) for the integral types: These overloads effectively cast x to a double before calculations (defined for T being any integral type ).<complex> and <valarray> (see complex sin and valarray sin).180/PI degrees.1
2
3
4
5
6
7
8
9
10
11
12
13
14
/* sin example */
#include <stdio.h> /* printf */
#include <math.h> /* sin */
#define PI 3.14159265
int main ()
{
double param, result;
param = 30.0;
result = sin (param*PI/180);
printf ("The sine of %f degrees is %f.\n", param, result );
return 0;
}The sine of 30.000000 degrees is 0.500000.