document.write( "Question 656789: A ladder is resting against a wall. The ladder and the ground make an angle of 40 degrees and the ladder is 4 ft. from the wall. How long is the ladder? \n" ); document.write( "

Algebra.Com's Answer #409649 by solver91311(24713) $\"\"$ $\"About$

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\n" ); document.write( "\n" ); document.write( "You have a right triangle with one of the acute angles measuring 40 degrees. You have the measure of the side adjacent to that 40 degree angle. The cosine of an angle of a right triangle is the measure of the side adjacent divided by the measure of the hypotenuse. The hypotenuse of the triangle is formed by the ladder and therefore the measure of the hypotenuse is the measure of the ladder.\r
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\n" ); document.write( "\n" ); document.write( "Use your calculator to do the arithmetic.\r
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\n" ); document.write( "\n" ); document.write( "John
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\n" ); document.write( "My calculator said it, I believe it, that settles it
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