document.write( "Question 43113: The approach pattern to an airport requires pilots to set an 11o angle of descent toward a runway. If a plane is flying at an altitude of 9,500 m, at what distance (measured along the ground) from the airport must the pilot decend \n" ); document.write( "
Algebra.Com's Answer #28148 by AnlytcPhil(1806)\"\" \"About 
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document.write( "The approach pattern to an airport requires pilots\r\n" );
document.write( "to set an 11o angle of descent toward a runway. If\r\n" );
document.write( "a plane is flying at an altitude of 9,500 m, at what\r\n" );
document.write( "distance (measured along the ground) from the airport\r\n" );
document.write( "must the pilot decend \r\n" );
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document.write( "                                 P\r\n" );
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document.write( "                      ·           | 9500 m \r\n" );
document.write( "A        ·     11°                |\r\n" );
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document.write( "              x                   B\r\n" );
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document.write( "The plane is at P, the Airport is at A,\r\n" );
document.write( "B is a point on the ground directly under the plane.\r\n" );
document.write( "We want to find AB, the length of which we call x\r\n" );
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document.write( "9500 is the opposite side to 11°\r\n" );
document.write( "x is the adjacent side to 11°\r\n" );
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document.write( "  tan(11°) = opposite/adjacent\r\n" );
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document.write( "  tan(11°) = 9500/x\r\n" );
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document.write( "x·tan(11°) = 9500 \r\n" );
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document.write( "         x = 9500/tan(11°)\r\n" );
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document.write( "         x = 48873.26315 m or about 48900 meters.\r\n" );
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document.write( "Edwin\r\n" );
document.write( "AnlytcPhil@aol.com
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