document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=621252>Question 621252</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please help me answer this question<BR>\n" );
document.write( "a man walks due west for 4kilometers, he then change direction and walks on a bearing of 197degrees untill he is southwest of his starting point,how far is he then from his 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 #390659 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=390659\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a man walks due west for 4kilometers, he then change direction and walks on a bearing of 197degrees untill he is southwest of his starting point,how far is he then from his starting point.<BR>\n" );
document.write( "-----------------<BR>\n" );
document.write( "Label the starting point A, 4 km West B & the 3rd point C.<BR>\n" );
document.write( "Angle A = 45 degs<BR>\n" );
document.write( "Angle B = 107 degs<BR>\n" );
document.write( "Angle C = 28 degs<BR>\n" );
document.write( "=============<BR>\n" );
document.write( "Side AC = side b<BR>\n" );
document.write( "Side AB = side c = 4 km<BR>\n" );
document.write( "Use Law of Sines<BR>\n" );
document.write( "c/sin(C) = b/sin(B)<BR>\n" );
document.write( "c = 4*sin(107)/sin(28)<BR>\n" );
document.write( "c =~ 8.148 km\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );