Talk:Pythagorean trigonometric identity: Difference between revisions
Brews ohare (talk | contribs) |
Garrett247 (talk | contribs) →Explanation needed: Gave an explanation. |
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"They can be derived from (1) using simple algebra" |
"They can be derived from (1) using simple algebra" |
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How do the 2nd and 3rd identities come from (1)?, show me the algebra required to convert them.[[User:Bdodo1992|Bdodo1992]] 13:43, 27 July 2007 (UTC) |
How do the 2nd and 3rd identities come from (1)?, show me the algebra required to convert them.[[User:Bdodo1992|Bdodo1992]] 13:43, 27 July 2007 (UTC) |
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If you look at the bottom of the article now, you can see that they divided them up. [[User:Garrett247|Garrett247]] ([[User talk:Garrett247|talk]]) 04:36, 27 October 2010 (UTC) |
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== Last two sections not pertinent == |
== Last two sections not pertinent == |
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Revision as of 04:36, 27 October 2010
Do this subject have any content that shouldn't just be part of Trigonometric identity? If this stays as a separate article, it needs a 'lot' more explanatory text. ike9898 21:06, Nov 23, 2004 (UTC)
use of square roots in the proof is DODGY
basically the way things are shown here only holds for angles in the base region despite the fact the identity is valid for all angles Plugwash 23:36, 21 Dec 2004 (UTC)
Explanation needed
"They can be derived from (1) using simple algebra" How do the 2nd and 3rd identities come from (1)?, show me the algebra required to convert them.Bdodo1992 13:43, 27 July 2007 (UTC)
If you look at the bottom of the article now, you can see that they divided them up. Garrett247 (talk) 04:36, 27 October 2010 (UTC)
Last two sections not pertinent
The sections "Using power series" and "Using differential equation" are germane to articles on the trig functions, but not to the Pythagorean trigonometric identity. Brews ohare (talk) 17:25, 5 June 2010 (UTC)
These sections are OK. I added some steps and conclusions drawing the connections. Brews ohare (talk) 18:51, 8 June 2010 (UTC)