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Re: What's wrong with my arc tangens calculation?

Newsgroups comp.lang.python
Date 2012-09-14 04:18 -0700
References <ba77717e-d812-4132-b477-cc3a79c41476@googlegroups.com> <mailman.694.1347620106.27098.python-list@python.org>
Message-ID <95bea1d5-ccbd-4987-9b64-6555075a3c1b@googlegroups.com> (permalink)
Subject Re: What's wrong with my arc tangens calculation?
From xliiv <tymoteusz.jankowski@gmail.com>

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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?
> 
> >
> 
> 63� 30" is 63.5�. So nothing is wrong. (You know, 1� = 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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Thread

What's wrong with my arc tangens calculation? xliiv <tymoteusz.jankowski@gmail.com> - 2012-09-14 03:49 -0700
  Re: What's wrong with my arc tangens calculation? Chris Angelico <rosuav@gmail.com> - 2012-09-14 20:54 +1000
  Re: What's wrong with my arc tangens calculation? Laszlo Nagy <gandalf@shopzeus.com> - 2012-09-14 12:54 +0200
    Re: What's wrong with my arc tangens calculation? xliiv <tymoteusz.jankowski@gmail.com> - 2012-09-14 04:18 -0700
    Re: What's wrong with my arc tangens calculation? xliiv <tymoteusz.jankowski@gmail.com> - 2012-09-14 04:18 -0700
  Re: What's wrong with my arc tangens calculation? Mark Lawrence <breamoreboy@yahoo.co.uk> - 2012-09-14 14:13 +0100
  Re: What's wrong with my arc tangens calculation? Chris Angelico <rosuav@gmail.com> - 2012-09-14 23:17 +1000

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