POV-Ray : Newsgroups : povray.text.tutorials : Trigonometry Server Time: 22 Jan 2020 09:24:45 GMT
  Trigonometry (Message 1 to 6 of 6)  
From: Jerry
Subject: Trigonometry
Date: 12 Jun 2000 15:26:08
Message: <jerry-80E32C.08260912062000@news.povray.org>
I uploaded some of the trig formulas I keep forgetting, and put a simple 
tutorial around them.

http://www.hoboes.com/html/NetLife/POV/Trig/

Comments welcome, especially if I got something wrong :*)

Jerry


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From: sighmoan
Subject: Re: Trigonometry
Date: 13 Jun 2000 10:46:19
Message: <394610fb@news.povray.org>
"Jerry" <jer### [at] acusdedu> wrote in message
news:jerry-80E32C.08260912062000@news.povray.org...
> I uploaded some of the trig formulas I keep forgetting, and put a simple
> tutorial around them.
>
> http://www.hoboes.com/html/NetLife/POV/Trig/
>
> Comments welcome, especially if I got something wrong :*)

Looks great, but those auto-run Quicktime movies gave IE conniption fits. I
thought my browser had crashed and was about to try Ctrl+Alt+Delete! Could
you at least fix them so they load, but don't run?

--
simon [is sorry he ever complained about animated GIFs ;) ]


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From: Andrea Ryan
Subject: Re: Trigonometry
Date: 19 Jun 2000 00:34:18
Message: <394D6897.E18734FB@global2000.net>
How about putting information about the law of sines and the law of cosines
on the page?  They will work with any triangle, not just right triangles.
The law of cosines is really just the Pythagorean theorem with a correction
factor.
Brendan Ryan

Jerry wrote:

> I uploaded some of the trig formulas I keep forgetting, and put a simple
> tutorial around them.
>
> http://www.hoboes.com/html/NetLife/POV/Trig/
>
> Comments welcome, especially if I got something wrong :*)
>
> Jerry


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From: Jerry
Subject: Re: Trigonometry
Date: 19 Jun 2000 18:44:44
Message: <jerry-F3C8DF.11444119062000@news.povray.org>
In article <394D6897.E18734FB@global2000.net>, Andrea Ryan 
<ary### [at] global2000net> wrote:

>How about putting information about the law of sines and the law of cosines
>on the page?  They will work with any triangle, not just right triangles.
>The law of cosines is really just the Pythagorean theorem with a correction
>factor.

Because I don't remember anything about them whatsoever? :*)

If you can explain them to me, and I find them useful, I will be happy 
to add a second chapter to my page.

Jerry


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From: Tony Micklus
Subject: Re: Trigonometry
Date: 20 Jun 2000 12:00:24
Message: <394f5cd8$1@news.povray.org>
If you are talking about what I think you are the laws are as follows

S = O/H
C = A/H
T =  O/A

S - Sine, C - Cosine, T - Tangent, O - Opposite, A - Adjacant, H -
Hypotinuse

Jerry wrote in message ...
>In article <394D6897.E18734FB@global2000.net>, Andrea Ryan
><ary### [at] global2000net> wrote:
>
>>How about putting information about the law of sines and the law of
cosines
>>on the page?  They will work with any triangle, not just right triangles.
>>The law of cosines is really just the Pythagorean theorem with a
correction
>>factor.
>
>Because I don't remember anything about them whatsoever? :*)
>


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From: Josh English
Subject: Re: Trigonometry
Date: 21 Jun 2000 23:32:37
Message: <39515074.16821BB5@spiritone.com>
Given any triangle with vertices A,B, and C, and their opposing sides, a,b,and
c, the Law of Sines states: (The Points and their angles are refered to by the
same capital letters, the lengths of the sides are in lower case)
(sin A)/a = (sin B)/b = (sin C)/c.
The Law of cosines states:

a^2 = b^2 + c^2 -2bc cos A
b^2 = a^2 + c^2 -2ac cos B
c^2 = a^2 + b^2 -2ab cos C.

in POV-Ray terms, cos A can be found with vdot(B-A,C-A)/a,c. (In the vdot, use
the position vectors, not the angles at those points. Maybe I should have been
clearer.)

Josh

Jerry wrote:

> In article <394D6897.E18734FB@global2000.net>, Andrea Ryan
> <ary### [at] global2000net> wrote:
>
> >How about putting information about the law of sines and the law of cosines
> >on the page?  They will work with any triangle, not just right triangles.
> >The law of cosines is really just the Pythagorean theorem with a correction
> >factor.
>
> Because I don't remember anything about them whatsoever? :*)
>
> If you can explain them to me, and I find them useful, I will be happy
> to add a second chapter to my page.
>
> Jerry

--
Josh English
eng### [at] spiritonecom
"May your hopes, dreams, and plans not be destroyed by a few zeros."


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