document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=935731>Question 935731</A>: <I><SPAN STYLE=\"word-break: break-all;\"> the diagram represent a simplified drawing of the timber cross-section of a roof.find the lengths  of the struts BD and EG<BR>\n" );
document.write( "fig link http://i1383.photobucket.com/albums/ah310/rizwanmehboob66izvve/unnamed_zps50683292.jpg<BR>\n" );
document.write( "http://s1383.photobucket.com/user/rizwanmehboob66izvve/media/unnamed_zps50683292.jpg.html </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #569132 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=569132\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> triangle <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=BCD ALIGN=MIDDLE  ALT=\"BCD\"   DISABLED_style= \"max-width:90%; height:auto;\" > is isosceles triangle; <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=BC=CD ALIGN=MIDDLE  ALT=\"BC=CD\"   DISABLED_style= \"max-width:90%; height:auto;\" >,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=B=70 ALIGN=MIDDLE  ALT=\"B=70\"   DISABLED_style= \"max-width:90%; height:auto;\" >° => then angles <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=C ALIGN=MIDDLE  ALT=\"C\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=D ALIGN=MIDDLE  ALT=\"D\"   DISABLED_style= \"max-width:90%; height:auto;\" > are <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=55 ALIGN=MIDDLE  ALT=\"55\"   DISABLED_style= \"max-width:90%; height:auto;\" >° each \r<BR>\n" );
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document.write( "we need to find <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=BD ALIGN=MIDDLE  ALT=\"BD\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "use<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a%2Fsin+%28A%29+=+b%2Fsin+%28B%29+=+c%2Fsin%28+C%29 ALIGN=MIDDLE  ALT=\"a%2Fsin+%28A%29+=+b%2Fsin+%28B%29+=+c%2Fsin%28+C%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=BC=3m ALIGN=MIDDLE  ALT=\"BC=3m\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=CD=3m ALIGN=MIDDLE  ALT=\"CD=3m\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=BD%2Fsin%2855%29+=+3m%2Fsin%2870%29 ALIGN=MIDDLE  ALT=\"BD%2Fsin%2855%29+=+3m%2Fsin%2870%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=BD+=+%283m%2Fsin%2870%29%29sin%2855%29 ALIGN=MIDDLE  ALT=\"BD+=+%283m%2Fsin%2870%29%29sin%2855%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=BD+=+%283m%2F0.93969%290.819152 ALIGN=MIDDLE  ALT=\"BD+=+%283m%2F0.93969%290.819152\"   DISABLED_style= \"max-width:90%; height:auto;\" > \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=BD+=+2.62m ALIGN=MIDDLE  ALT=\"BD+=+2.62m\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "in triangle <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=EGF ALIGN=MIDDLE  ALT=\"EGF\"   DISABLED_style= \"max-width:90%; height:auto;\" >, given angle <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=G=75 ALIGN=MIDDLE  ALT=\"G=75\"   DISABLED_style= \"max-width:90%; height:auto;\" >°, then other two angles are  <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=52.5 ALIGN=MIDDLE  ALT=\"52.5\"   DISABLED_style= \"max-width:90%; height:auto;\" >° each<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=GF=4m ALIGN=MIDDLE  ALT=\"GF=4m\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=EF=4m ALIGN=MIDDLE  ALT=\"EF=4m\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=EG%2Fsin%2852.5%29+=+4m%2Fsin%2875%29 ALIGN=MIDDLE  ALT=\"EG%2Fsin%2852.5%29+=+4m%2Fsin%2875%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=EG=+%284m%2Fsin%2875%29%29sin%2852.5%29 ALIGN=MIDDLE  ALT=\"EG=+%284m%2Fsin%2875%29%29sin%2852.5%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=EG+=+%284m%2F0.9659258%290.787705+ ALIGN=MIDDLE  ALT=\"EG+=+%284m%2F0.9659258%290.787705+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=EG+=+3.26m ALIGN=MIDDLE  ALT=\"EG+=+3.26m\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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