document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=169900>Question 169900</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is the base length of an isosceles triangle that has two legs of 5 inches and the obtuse angle of 120 degres and the two base angles of 30 degress?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #125371 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=125371\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> What is the base length of an isosceles triangle that has two legs of 5 inches and the obtuse angle of 120 degres and the two base angles of 30 degress? <BR>\n" );
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document.write( "If you sketch this, then draw the altitude from the upper vertex (=120 degs), you see that 5 is the hypotenuse of each of 2 congruent triangles.  Half of the base is 5*cos(30) = 5*sqrt(3)/2.  So the base is 5*sqrt(3), = ~8.6603\r<BR>\n" );
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