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


int main () {

double a;
double b, c;
double d, e, f;
double g, h, i;
double j, k, l; 
double m, n, o;
double p, q, r;
printf("input number?");
scanf(" %lf",&a);
b = .0;
re:

c = tan(b);
 d = tan(c);
 e = c - d;
 f = tan(e);
 g = tan(f);
 h = f - g;
 i = tan(h);
 j = tan(i);
 k = i - j;
 m = tan(k);
 n = tan(m);
 o = m - n;
 p = tan(o);
 q = tan(p);
 r = p - q;
l = a - r;
if ( l < 0 ) {
l = l * -1; }
if ( l > .001 ) {
 b = b + .0000001; }
if ( l > .001 ) {
 goto re; }
 
printf(" %f \n" , r);
printf(" %f \n" , b);


}

/* to compile gcc tan.c -lm -o tan then sudo cp tan /bin/ */