document.write( "Question 1180616: A pilot heads his jet due east. The jet has a speed of 680 km/h relative to the air. The wind is blowing due north with a speed of 64 km/h\r
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Algebra.Com's Answer #853743 by ikleyn(53618)\"\" \"About 
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\n" ); document.write( "A pilot heads his jet due east. The jet has a speed of 680 km/h relative to the air.
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\n" ); document.write( "\n" ); document.write( "        Calculations in the post by @mananth are erroneous.\r
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document.write( "In this problem, 680 km/h is the rate of the jet relative to the air.\r\n" );
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document.write( "It is directed to East.  64 km/h is the rate of the wind, it is directed North.\r\n" );
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document.write( "The combined groundspeed of the plane (the speed relative to the ground) is\r\n" );
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document.write( "    \"sqrt%28680%5E2+%2B+64%5E2%29\" = \"sqrt%28466496%29\" = 683.005 km/h\r\n" );
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