document.write( "Question 264217: A ladder leaning against a house makes an angle of 30 degrees with the ground. the foot of the ladder is 7 feet from the foot of the house. How long is the ladder to the nearest foot? \n" ); document.write( "
Algebra.Com's Answer #194548 by dabanfield(803)\"\" \"About 
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A ladder leaning against a house makes an angle of 30 degrees with the ground. the foot of the ladder is 7 feet from the foot of the house. How long is the ladder to the nearest foot?\r
\n" ); document.write( "\n" ); document.write( "Let L be the length of the ladder. The ladder and the side of the house form a right triangle with the ladder being the hypotenuse and the house wall being the side opposite the 30 degree angle. We have a theorem that says that in a right triangle the side opposite a 30 degree angle is half the hypotenuse, in this case L/2. \r
\n" ); document.write( "\n" ); document.write( "So by Pythagorean Theorem we have:\r
\n" ); document.write( "\n" ); document.write( "L^2 = (L/2)^2 + 7^2 or
\n" ); document.write( "L^2 = (L^2)/4 + 49\r
\n" ); document.write( "\n" ); document.write( "Solve the above for L.
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