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;-webkit-border-radius: 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 the [[User:Piphi|<span style="color:#83a1d6;">legendary piphi</span>]] for supporting educational content useful to avid math students.  
 
The Piphi Wiki project is administered by the [[User:Piphi|<span style="color:#83a1d6;">legendary piphi</span>]] for supporting educational content useful to avid math students.  

Latest revision as of 19:22, 12 June 2020

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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