document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1037266>Question 1037266</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An architextra designs a house that is 12 m wide. The rafters holding up the roof are equal length and meet at an angle of 68 degree. The rafters extend 0.6 m beyond the supporting wall. How long are the rafters? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #651960 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=651960\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hi there,<BR>\n" );
document.write( "Consider that the problem<BR>\n" );
document.write( "is an isosceles triangle.<BR>\n" );
document.write( "Two equal sides (the rafters <BR>\n" );
document.write( "from apex to supporting wall.)<BR>\n" );
document.write( "If the the top angle = 68 degrees,<BR>\n" );
document.write( "then the two side angles each =<BR>\n" );
document.write( "(180 - 68)/2 = 56 degrees.<BR>\n" );
document.write( "Now label the triangle<BR>\n" );
document.write( "A where the 68 degrees are.<BR>\n" );
document.write( "B and C on opposing points<BR>\n" );
document.write( "of the triangle.<BR>\n" );
document.write( "Using Sine Rule<BR>\n" );
document.write( "a/SinA = b/sinB = c/Sinc<BR>\n" );
document.write( "We will use a/SinA = b/SinB<BR>\n" );
document.write( "12/Sin(68) = b/Sin(56)<BR>\n" );
document.write( "Cross multiply:<BR>\n" );
document.write( "b = 12 x Sin(56)/Sin(68)<BR>\n" );
document.write( "b = 10.73 m (2 decimal places)<BR>\n" );
document.write( "Rafter = 10.73 + 0.6 = 11.33 m.<BR>\n" );
document.write( "Hope this helps :-) </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );