Talk:Quaternions and spatial rotation: Difference between revisions

Revision as of 18:20, 20 July 2016

Revision as of 21:26, 5 November 2016

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Cheers.—[[User:InternetArchiveBot|'''<span style="color:darkgrey;font-family:monospace">InternetArchiveBot</span>''']] <span style="color:green;font-family:Rockwell">([[User talk:InternetArchiveBot|Report bug]])</span> 18:20, 20 July 2016 (UTC)

== This part is confusing or possibly wrong ==

I don't have much expertise in this area, so when I read:

<blockquote>ngle {\displaystyle \alpha =2\cos ^{-1}w=2\sin ^{-1}{\sqrt {x^{2}+y^{2}+z^{2}}}.} \alpha =2\cos ^{-1}w=2\sin ^{-1}{\sqrt {x^{2}+y^{2}+z^{2}}}. </blockquote>

I am confused by this notation. From reading previous text I would think it's:

<blockquote>ngle {\displaystyle \alpha =2\cos ^{-1}w=2\sin ^{-1}{\sqrt {x^{2}+y^{2}+z^{2}}}.} \alpha =2\cos ^{-1}{\sqrt {x^{2}+y^{2}+z^{2}} w=2\sin ^{-1}{\sqrt {x^{2}+y^{2}+z^{2}}}. </blockquote>

because there's a rotation in both angles. Is this right or am I missing something? [[User:DazzleNovak|DazzleNovak]] ([[User talk:DazzleNovak|talk]]) 21:26, 5 November 2016 (UTC)