#include <stdio.h>
#include <math.h>
int main(void)
{
float rads;
scanf("%f", &rads);
printf("%.3f\n", sin(rads));
return 0;
}
#include <stdio.h>
#include <math.h>
int main(void)
{
float rads;
scanf("%f", &rads);
printf("%.3f\n", sin(rads));
return 0;
}