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04-03-2010, 08:20 PM
Join Date: Nov 2009
Location: nr Stratford-Upon-Avon
Ok, have been scratching my head a bit on this one...
It should be simple enough as it is a right angle triangle that I am working on..
(Actually it's for stair cases)
What I need to be able to find is the Hypotenuse..
Simple enough ? I thought so as well...
hyp = Opposite / Sin(34)
which if am understanding things right, the php should look like..
$hyp = $oppo / sin(35);
ok, so then I realised I was getting degrees not radians..
so used.. deg2rad()
$hyp = $oppo / deg2rad(sin(35));
and guess what, the answer I get does not match what I expect to see, I have used my daughters GCSE revision books to check the results, using :-
$hyp = 15 / deg2rad(sin(35));
$hyp should = 26.151 (or there abouts)
However I get -2007.17299864 !!!! not quite what was expecting..
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