document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=854744>Question 854744</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A plane leaves an airport and flies at 360mi/hr on a course of 103° 15' for 1hr and 33minutes. Then it changes course to 236°45' and flies for 48minutes. How far is it from the airport? If it wished to return, what would be its course? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #514873 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=514873\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A plane leaves an airport and flies at 360mi/hr on a course of 103° 15' for 1hr and 33minutes. Then it changes course to 236°45' and flies for 48minutes. How far is it from the airport? If it wished to return, what would be its course?<BR>\n" );
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document.write( "360 mi/hr = 6 mi/minute<BR>\n" );
document.write( "103° 15' = 103.25°<BR>\n" );
document.write( "236° 45' = 236.75°<BR>\n" );
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document.write( "Label the start point A, then B & C<BR>\n" );
document.write( "AB = 6*93 = 558 miles (side c)<BR>\n" );
document.write( "BC = 6*48 = 288 miles (side a)<BR>\n" );
document.write( "Angle at B = 46.5 degs<BR>\n" );
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document.write( "Side b = distance from start<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b%5E2+=+a%5E2+%2B+c%5E2+-+2ac%2Acos%28B%29 ALIGN=MIDDLE  ALT=\"b%5E2+=+a%5E2+%2B+c%5E2+-+2ac%2Acos%28B%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "Ude Law of Sines to find the heading back to A<BR>\n" );
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