$ perl sill2.pl
elt 0 0 is 0.4375
elt 0 1 is 4.3125
elt 0 2 is bath-left
elt 1 0 is 0.375
elt 1 1 is 4.375
elt 1 2 is bath-middle
elt 2 0 is 0.375
elt 2 1 is 4.4375
elt 2 2 is bath-right
bath-left has slope 5.82263230478133
bath-middle has slope 4.91710033552881
bath-right has slope 4.84767847916148
$ cat sill2.pl
#!/usr/bin/perl -w
use strict;
use 5.010;
use Math::Trig;
BEGIN { push @INC, ".."; }
use utils1;

my @AoA;
my $aoa_ref = \@AoA;
my $vector_ref = [0.4375, 4.3125, "bath-left"];
push @AoA, $vector_ref;
$vector_ref = [0.375, 4.375,  "bath-middle"];
push @AoA, $vector_ref;
$vector_ref = [0.375,4.4375, "bath-right"];
push @AoA, $vector_ref;
print_aoa($aoa_ref);
for my $i ( 0 .. $#AoA ) {
   my $ratio = $AoA[$i][0]/$AoA[$i][1];
   my $rad = asin($ratio);
   my $degrees  = rad2deg($rad);
   my $name = $AoA[$i][2];
   say "$name has slope $degrees";
   }
__END__ 
$

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This might be the most robust version of this material.

In reply to Re^6: enumerating values for slopes by Aldebaran
in thread enumerating values for slopes by Aldebaran

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