document.write( "Question 192911: An airplane flies on a course of 130* at a speed of 1100 km/h. How far east of it starting point is it after 3 hours? \n" ); document.write( "
Algebra.Com's Answer #144865 by RAY100(1637)\"\" \"About 
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130 is heading from north\r
\n" ); document.write( "\n" ); document.write( "d=vt=1100 km/hr * 3 hrs =3300km ,, distance along hypotenuse\r
\n" ); document.write( "\n" ); document.write( "sketching a triangle with east as one leg, hypotenuse along 130 heading\r
\n" ); document.write( "\n" ); document.write( "supplement of 130 is 50 deg, which is also top vertex angle, opposite horizontal line that is east.\r
\n" ); document.write( "\n" ); document.write( "in short, sin 50 deg = x/3300, or x=3300*sin50 = 2527.9
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