document.write( "Question 281771: A plane's altitude is 2400 ft. For the pilot, the angle of depression of the base of a control tower is 13 degrees. To the nearest foot, what is the distance from the pilot to the base of the control tower?
\n" ); document.write( "a. 2400 ft
\n" ); document.write( "b. 31,200 ft
\n" ); document.write( "c. 10,396 ft
\n" ); document.write( "d. 10,669 ft
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Algebra.Com's Answer #204731 by subudear(62)\"\" \"About 
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The distance between pilot and tower will be the hpotenuse of the right angel triangle. Let the hypotenuse length be x\r
\n" ); document.write( "\n" ); document.write( "So sin(13) = 2400 / x\r
\n" ); document.write( "\n" ); document.write( "x = 2400 / 0.22495 = 10669\r
\n" ); document.write( "\n" ); document.write( "So answer will be (d) 10669 ft
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