document.write( "Question 256426: Please help with this word problem. An ant is 120 ft. from an 80 ft. tall tree whose top is the visual line of a 600 ft. tall building. How far is the tree from the building? Please explain every step. For example where you get numbers. Thank you so much. \n" ); document.write( "
Algebra.Com's Answer #188587 by ankor@dixie-net.com(22740)\"\" \"About 
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An ant is 120 ft. from an 80 ft. tall tree whose top is the visual line of a 600 ft. tall building.
\n" ); document.write( " How far is the tree from the building? Please explain every step.
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\n" ); document.write( "Find the angle of sight from the ant to the tree
\n" ); document.write( "Use the tangent of the angle(A): Side opposite (80ft) over Side adjacent (120ft)
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\n" ); document.write( "tan(A) = \"80%2F120\"
\n" ); document.write( "tan(A) = .6667
\n" ); document.write( "A = 33.69 degrees
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\n" ); document.write( "Use the tan of the same angle to find the dist (d) from the ant to the building
\n" ); document.write( "Side opposite (600) over side adjacent (d)
\n" ); document.write( "tan(33.69) = \"600%2Fd\"
\n" ); document.write( ".6667 - \"d%2F600\"
\n" ); document.write( "d = \"600%2F.667\"
\n" ); document.write( "d = 900 ft from the Ant to the building
\n" ); document.write( "therefore
\n" ); document.write( "900 - 120 = 780 ft from the tree to the building
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\n" ); document.write( "After seeing the problem, I read it again and see I made a mistake, I put 600 as the line of sight distance instead of the building height, Sorry. Obviously your teacher did it a different way.
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\n" ); document.write( "Using a simpler method, ratios of corresponding sides:
\n" ); document.write( "tree height to building height is to ant/tree dist to ant/building dist (x)
\n" ); document.write( "\"80%2F600\" = \"120%2Fx\"
\n" ); document.write( "cross multiply
\n" ); document.write( "80x = 72000
\n" ); document.write( "x = \"72000%2F80\"
\n" ); document.write( "x = ft from ant to building
\n" ); document.write( "then
\n" ); document.write( "900 - 120 = 720 ft from tree to building
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\n" ); document.write( "Hope this helps\r
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