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Date: Fri, 14 Sep 2012 04:18:33 -0700 (PDT)
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Subject: Re: What's wrong with my arc tangens calculation?
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Xref: csiph.com comp.lang.python:29154

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:
>=20
> >
>=20
> > tg(63'10'') =3D 1.9768
>=20
> > tg(63'20'') =3D 1.9912
>=20
> > tg(63'30'') =3D 2.0057
>=20
> >
>=20
> > For me python should return something more like 63'2x'' than 63'4x''(be=
casue 63'30'' is higher than 2.0)
>=20
> >
>=20
> > what's wrong?
>=20
> >
>=20
> 63=EF=BF=BD 30" is 63.5=EF=BF=BD. So nothing is wrong. (You know, 1=EF=BF=
=BD =3D 60 arc second!)

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