What's wrong with my arc tangens calculation?

xliiv tymoteusz.jankowski at gmail.com
Fri Sep 14 07:18:33 EDT 2012

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On Friday, September 14, 2012 12:55:06 PM UTC+2, Laszlo Nagy wrote:
> > but when i lookup tg in a paper table (last decade math book) i've got these values:
> 
> >
> 
> > tg(63'10'') = 1.9768
> 
> > tg(63'20'') = 1.9912
> 
> > tg(63'30'') = 2.0057
> 
> >
> 
> > For me python should return something more like 63'2x'' than 63'4x''(becasue 63'30'' is higher than 2.0)
> 
> >
> 
> > what's wrong?
> 
> >
> 
> 63ï¿½ 30" is 63.5ï¿½. So nothing is wrong. (You know, 1ï¿½ = 60 arc second!)

So the wrong part is me ;)
The python's 63.43494882292201 is degrees (according to function math.degrees)
but book's value is in minutes. Clearified Thanks, all.

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