#include <math.h>
#include <stdio.h>

double test1 = 213.444;
double test3;
float test2 = 213.444;
double test4;
float test5;


int main(){
        test3 = sin(test1);
        test4 = sin((double)test2);
        test5 = sinf(test2);

        printf("%f\n", test3);
        printf("%f\n", test4);
        printf("%f\n", test5);

return 0;
}



Results:
xtroseimac:test kevin$ gcc -o mtest mtest.c
xtroseimac:test kevin$ ./mtest
-0.183259
-0.183259
-0.183259