document.write( "Question 1163367: From the top of Mt Washington, which is 6288 feet above sea level, how far is it to the horizon?Assume that the earth has a 3960-mile radius, and give your answer to the nearest miles \n" ); document.write( "
Algebra.Com's Answer #787448 by ikleyn(52797)\"\" \"About 
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document.write( "If you make a sketch, you will have a right-angled triangle.\r\n" );
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document.write( "Its hypotenuse is the segment from the center of the Earth to the top of the mountain of  \"3960+%2B+6288%2F5280\" = 3961.191 miles long.\r\n" );
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document.write( "Its leg is the Earth radius of 3960 miles drawn to the tangent point.\r\n" );
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document.write( "Its other leg is the tangent segment to the Earth from the top of the mountain.\r\n" );
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document.write( "The length of this second leg is the value the problem asks for.\r\n" );
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document.write( "Thus \"how far is to the horizon\" = \"sqrt%283961.191%5E2+-+3960%5E2%29\" = 97.13 miles.    ANSWER\r\n" );
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