document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1035801>Question 1035801</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi, please help with this problem. A triangle with angles 40, 40, and 100 has a perimeter of 20cm. Find the length of each side of the triangle.<BR>\n" );
document.write( "I know that it is an isosceles triangle and perimeter is sum of sides so formula would be perimeter =2a+b or 20=2a+b.<BR>\n" );
document.write( "How do I proceed as it seems to have too little info? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #650433 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=650433\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A triangle with angles 40, 40, and 100 has a perimeter of 20cm. Find the length of each side of the triangle.<BR>\n" );
document.write( "I know that it is an isosceles triangle and perimeter is sum of sides so formula would be perimeter =2a+b or 20=2a+b.<BR>\n" );
document.write( "-----------<BR>\n" );
document.write( "Make a similar triangle with short sides of a = 10 & b = 10 (or any length).<BR>\n" );
document.write( "Find the 3rd side, c, using the Cosine Law.<BR>\n" );
document.write( "c =~ 14.7433<BR>\n" );
document.write( "Perimeter = 34.7433<BR>\n" );
document.write( "-----------<BR>\n" );
document.write( "\"Scale it\" by 20/34.7433<BR>\n" );
document.write( "The short sides are 10*(20/34.7433) = 5.7565<BR>\n" );
document.write( "The long side is 8.4867<BR>\n" );
document.write( " </SPAN>\n" );
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