document.write( "Question 1150168: An airplane is heading north at an airspeed of 750 km/hr, but there is a wind blowing from the northwest at 70 km/hr.\r
\n" ); document.write( "\n" ); document.write( "The plane will end up flying
\n" ); document.write( " (answer) degrees off course\r
\n" ); document.write( "\n" ); document.write( "The plane's speed relative to the ground will be
\n" ); document.write( " (answer) km/hr \n" ); document.write( "
Algebra.Com's Answer #771561 by Alan3354(69443)\"\" \"About 
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An airplane is heading north at an airspeed of 750 km/hr, but there is a wind blowing from the northwest at 70 km/hr.
\n" ); document.write( "The plane will end up flying
\n" ); document.write( "(answer) degrees off course
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\n" ); document.write( "It's not necessarily \"off course\" as no course was stated.
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\n" ); document.write( "to find the ground track:
\n" ); document.write( "It's a triangle.
\n" ); document.write( "One side is on the y-axis from (0,0) to (750,0)
\n" ); document.write( "The 2nd side is from (750,0) at an interior angle 45 degs and length of 70.
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\n" ); document.write( "The groundspeed is the 3rd side.
\n" ); document.write( "Use the Cosine Law.
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\n" ); document.write( "Use the Law of Sines to find the angle at (0,0). \n" ); document.write( "
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