document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=974514>Question 974514</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Pls help out :A man walks 8km north and then 5km in a direction east of north. Find the distance from the starting point </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #596387 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=596387\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> :A man walks 8km north and then 5km in a direction east of north. Find the distance from the starting point<BR>\n" );
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document.write( "\"east of north\" is not clearly defined.<BR>\n" );
document.write( "If it's assumed to be 45 degs from north (heading of 045) then:<BR>\n" );
document.write( "Use the Cosine Law.<BR>\n" );
document.write( "Side a = 8<BR>\n" );
document.write( "Side b = 5<BR>\n" );
document.write( "The included angle is 135 degs<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=c%5E2+=+a%5E2+%2B+b%5E2+-+2ab%2Acos%28135%29+=+64+%2B+25+%2B+80%2Asqrt%282%29%2F2 ALIGN=MIDDLE  ALT=\"c%5E2+=+a%5E2+%2B+b%5E2+-+2ab%2Acos%28135%29+=+64+%2B+25+%2B+80%2Asqrt%282%29%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "c =~ 12.065 km<BR>\n" );
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