function
sin
<cmath>
double sin ( double x );
float sin ( float x );
long double sin ( long double x );
Compute sine
Returns the sine of an angle of
x radians.
In C++, this function is overloaded in
<complex> and
<valarray> (see
complex sin and
valarray sin).
Parameters
- x
- Floating point value representing an angle expressed in radians.
Return Value
Sine of
x.
Portability
In C, only the
double version of this function exists with this name.
Example
1 2 3 4 5 6 7 8 9 10 11 12 13 14
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/* sin example */
#include <stdio.h>
#include <math.h>
#define PI 3.14159265
int main ()
{
double param, result;
param = 30.0;
result = sin (param*PI/180);
printf ("The sine of %lf degrees is %lf.\n", param, result );
return 0;
}
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Output:
The sine of 30.000000 degrees is 0.500000.
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See also
- cos
- Compute cosine (function)
- tan
- Compute tangent (function)