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April 21st, 2017, 03:21 AM  #11 
Global Moderator Joined: Dec 2006 Posts: 16,944 Thanks: 1255 
Try using the "Go Advanced" button, then scroll down and use the "Manage Attachments" button. Would glasses with bifocal lenses be an alternative solution for you? Your algebra looks correct. 

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base, height, included, pulleys, triangle 
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