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

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Date Fri, 14 Sep 2012 20:54:15 +1000
Subject Re: What's wrong with my arc tangens calculation?
From Chris Angelico <rosuav@gmail.com>
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On Fri, Sep 14, 2012 at 8:49 PM, xliiv <tymoteusz.jankowski@gmail.com> wrote:
> I do some math with python:
>
> import math as m
> m.degrees(m.atan(2))
>>>> 63.43494882292201
>
> 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)

According to Google:
.43494882292201 degrees = 26.0969294 arcminutes

So I would say that your table and Python are in agreement. Do you
know what the notation 63'30" means?

ChrisA

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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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