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![[Post New]](/templates/default/images/icon_minipost_new.gif) 7 Apr 2008 16:30:52 IST
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![tanX= rac{AP}{DP}\ \tanB= rac{AP}{BP}\ \Rightarrow AP=DP . tanX=BP . tanB\ \Rightarrow rac{BC}{2}. tanX= rac{5BC}{2}. tanB [BC = DE = EC= 2DP]\ \Rightarrow tanX=5.tanB](http://alt2.artofproblemsolving.com/Forum/latexrender/pictures/f/6/8/f68c4b2ed8110f04def8f465564bd0a803292f9a.gif)
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