C sin() function

C sin() function - Calculate Sine


double sin(double x)

The sin() function is used to calculate the sine of x, with x expressed in radians.


Name Description Required /Optional
x Angle in radians. Required

Return value from sin()

  • This function returns sine of x.

Example: sin() function

The following example shows the usage of sin() function.

#include <math.h>
#include <stdio.h>
int main(void)
   double x, y; 
   x = 1;
   y = sin(x);   
   printf("sin( %lf ) = %lf\n", x, y);
   x = 0;
   y = sin(x);
   printf("\nsin( %lf ) = %lf\n", x, y);


sin( 1.000000 ) = 0.841471

sin( 0.000000 ) = 0.000000

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