document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=938672>Question 938672</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An airplane left field A and flew on a course of 118degrees for 2 hours at 172mi/hr and landed at field B. It then took off on a course of 208degrees and landed at field C, which is due south of field A. How far is C from B? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #572288 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=572288\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> An airplane left field A and flew on a course of 118degrees for 2 hours at 172mi/hr and landed at field B. It then took off on a course of 208degrees and landed at field C, which is due south of field A. How far is C from B?<BR>\n" );
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document.write( "Let field A be at (0,0)::<BR>\n" );
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document.write( "Coordinates of B::<BR>\n" );
document.write( "x-coordinate = 2*172*cos(118) = -161.5 <BR>\n" );
document.write( "y-coordinate = 2*172*sin(118) = 303.73<BR>\n" );
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document.write( "Coordinates of C::<BR>\n" );
document.write( "You did not post the time the plane flew from B to C.<BR>\n" );
document.write( "If C is due south of A, it's x-coordinate = 0<BR>\n" );
document.write( "Note:: A course of 208 degrees from B cannot get the plane due south of A.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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