Shell Programming and Scripting

A=34.16597 B=-84.33244
C=34.2344 D=-84.29189

   test "$A" -eq "$C" -o "$B" -eq "$D"
then
echo "The distance is zero"
else
if
   "sin$Asin$C + cos$Acos$Ccos[$B - $D]" -gt 1
then
echo "The distance is"
3963.1 "*" ARCOS[1]
else
echo "The distance is"
3963.1 "*" ARCOS[sin$Asin$C+cos$Acos$Ccos[$B-$D]
fi
fi

$ cat mathtool.c
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <stdio.h>
int main(int argc, char *argv[])  {
        double arg2,result;
        arg2=strtod(argv[2],(char **) NULL);
        if (!strcmp(argv[1], "asin")) {
                result=asin(arg2);
        } else if (!strcmp(argv[1], "asind")) {
                result=asin(arg2)*57.29577951308232087679815481410517033240547246656432154916024386120;
        } else if (!strcmp(argv[1], "acos")) {
                result=acos(arg2);
        } else if (!strcmp(argv[1], "acosd")) {
                result=acos(arg2)*57.29577951308232087679815481410517033240547246656432154916024386120;
        } else if (!strcmp(argv[1], "atan")) {
                result=atan(arg2);
        } else if (!strcmp(argv[1], "atand")) {
                result=atan(arg2)*57.29577951308232087679815481410517033240547246656432154916024386120;
        } else {
                printf("error \n");
        }
        printf("%-20.6f \n", result);
        exit(0);
}
$
I-search:
$ gcc mathtool.c -l m -o mathtool
$ ./mathtool asin 1.0
1.570796
$ ./mathtool asind 1.0
90.000000

from math import sin , cos, acos
A = 34.16597 
B = -84.33244
C = 34.2344 
D = -84.29189
result = ( sin(A) * sin(C) )+  ( cos(A) * cos(C) * cos(B-D) )
if A == C or B == D:
    print "The distance is zero"
elif result > 1:
    print "The distance is " , 3963.1 * acos(1) 
else:
    print "The distance is " , acos(result)

# ./test.py
The distance is  0.0782622048633