$ ./cos-2
cos(2)=-0.416147
cos(2gradusa)=0.999391
$ cat cos-2.c
#include <stdio.h>
#include <math.h>
void main() {
printf("cos(2)=%f\n",cos(2));
printf("cos(2gradusa)=%f\n",cos(2*M_PI/180));
}
$ ./cos-2
cos(2)=-0.416147
cos(2gradusa)=0.999391
$ cat cos-2.c
#include <stdio.h>
#include <math.h>
void main() {
printf("cos(2)=%f\n",cos(2));
printf("cos(2gradusa)=%f\n",cos(2*M_PI/180));
}
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