document.write( "Question 216502: a tv tower is 20.5m high.Wire braces attached 4.5m from the top of the tower are 8m aways from the base.Find the length of each wire brace.illustrate. \n" ); document.write( "
Algebra.Com's Answer #163486 by tutor_paul(519)\"\" \"About 
You can put this solution on YOUR website!
The tower and the distance along the ground from base of tower to brace are the legs of a right triangle, and the length of the brace is the hypotenuse. You can thus use the pythagorean theorem to solve this. Let x be the length of the brace.
\n" ); document.write( "\"%2820.5-4.5%29%5E2%2B8%5E2=x%5E2\"
\n" ); document.write( "\"x%5E2=16%5E2%2B8%5E2\"
\n" ); document.write( "\"x%5E2=256%2B64\"
\n" ); document.write( "\"x%5E2=320\"
\n" ); document.write( "Take the square root of both sides; consider only the positive result:
\n" ); document.write( "\"x=sqrt%28320%29\"
\n" ); document.write( "Simplify...
\n" ); document.write( "\"highlight%28x=8sqrt%285%29%29\"
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\n" ); document.write( "Good Luck,
\n" ); document.write( "tutor_paul@yahoo.com
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