document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=977449>Question 977449</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Two cyclist leave from the intersection of two roads at the same time. The angle between the two roads is 82°. In one hour, one cyclist travels 18km along one road and the other travels 14 km along the other road. how far apart, in a direct line, are the cyclist at the end of this hour ? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #598979 by </B><A HREF=/tutors/aboutme.mpl?userid=Cromlix><B>Cromlix(4381)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Cromlix><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=Cromlix><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=598979\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hi there,<BR>\n" );
document.write( "Using the cosine rule:<BR>\n" );
document.write( "Cos A = 82 degrees<BR>\n" );
document.write( "b= 14 km<BR>\n" );
document.write( "c = 18 km<BR>\n" );
document.write( "a^2 = b^2 + c^2 - 2bc Cos A<BR>\n" );
document.write( "a^2 = 14^2 + 18^2 - 2x 14 x 18 x Cos82<BR>\n" );
document.write( "a^2 = 449.857<BR>\n" );
document.write( "a = square root of 449.857<BR>\n" );
document.write( "a = 21.2 km<BR>\n" );
document.write( "This how far apart they are after an hour.<BR>\n" );
document.write( "Hope this helps:-) </SPAN>\n" );
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