Difference between revisions of "User:Piphi/AoPS Wiki"

 
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__NOTOC__  __NOEDITSECTION__ <div class="frontlink" style="background-color:#1b365d; color:#ffffff; font-size: 110%; padding-left:15px; padding-right:15px; padding-bottom:10px;"> <span style="font-size: 200%">'''Welcome to Piphi's Wiki!'''</span>
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__NOTOC__ __NEWSECTIONLINK__ __NOEDITSECTION__ <div class="frontlink" style="background-color:#1b365d; color:#ffffff; font-size: 110%; padding-left:15px; padding-right:15px; padding-bottom:10px;-webkit-border-radius: 10px;"> <span style="font-size: 200%">'''Welcome to Piphi's Wiki!'''</span>
 
   
 
   
The Piphi Wiki project is administered by [[User:Piphi|<span style="color:#83a1d6;">the legendary piphi</span>]] for supporting educational content useful to avid math students.  
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The Piphi Wiki project is administered by [[User:Piphi|<span style="color:#83a1d6;">piphi</span>]] for supporting educational content useful to avid math students.  
 
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<h2 style="border-bottom: 1px solid; color: #1b365d;">New to the AoPS Wiki?</h2>
 
 
If you don't know much about how to edit a wiki, you might want to read the [[AoPSWiki:Tutorial|tutorial]] and the [[Help:Contents|help files]]. You can also read [[AoPSWiki:What AoPSWiki is not|what AoPSWiki is not]]. Lastly, please read the [[AoPSWiki:Policy|policies]] of the AoPSWiki before editing, and [[AoPSWiki:What makes AoPSWiki different|why AoPSWiki is different from other online resources]].
 
 
AoPSWiki runs on the [[MediaWiki]] software.
 
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Latest revision as of 16:37, 9 June 2021

Problem of the Week

2008 AMC 10B, Problem 14

Triangle $OAB$ has $O=(0,0)$, $B=(5,0)$, and $A$ in the first quadrant. In addition, $\angle ABO=90^\circ$ and $\angle AOB=30^\circ$. Suppose that $OA$ is rotated $90^\circ$ counterclockwise about $O$. What are the coordinates of the image of $A$?

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