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sin function in C

Sin function returns sine of an angle(in radian).

Declaration: double sin(double);

C program

#include <stdio.h>
#include <math.h>
int main()
{
  double result, x = M_PI/6;
  result = sin(x);
  printf("The sin(%lf) = %.2lf\n", x, result);
  return 0;
}