document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=623341>Question 623341</A>: <I><SPAN STYLE=\"word-break: break-all;\">  A plane is headed directly east at 340 mi/hr when the wind is from the south at 45 mi/hr.<BR>\n" );
document.write( "What is its velocity (magnitude and direction) with respect to the ground ?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #392099 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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/cgi-bin/show-face.mpl?user=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=392099\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  A plane is headed directly east at 340 mi/hr when the wind is from the south at 45 mi/hr.<BR>\n" );
document.write( "What is its velocity (magnitude and direction) with respect to the ground ?<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=v%5E2+=+340%5E2+%2B+45%5E2 ALIGN=MIDDLE  ALT=\"v%5E2+=+340%5E2+%2B+45%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "v =~ 342.965 mi/hr<BR>\n" );
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document.write( "East = 090 degs<BR>\n" );
document.write( "tan = 45/340<BR>\n" );
document.write( "Angle with heading = atan(45/340) =~ 7.54 degs<BR>\n" );
document.write( "Ground track = 090 - 7.54 = 82.46 degs<BR>\n" );
document.write( "--> 082<BR>\n" );
document.write( "Aircraft don't use fractions of degrees.<BR>\n" );
document.write( "Also, they don't use mi/hr, they use knots.<BR>\n" );
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