document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1099507>Question 1099507</A>: <I><SPAN STYLE=\"word-break: break-all;\"> prove the identity\r<BR>\n" );
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document.write( "[cot(X) + cot(Y)] / [tan(X) + tan(Y)] = cot(X)cot(Y)  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #714052 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=714052\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> prove the identity\r<BR>\n" );
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document.write( "[cot(X) + cot(Y)] / [tan(X) + tan(Y)] = cot(X)cot(Y) <BR>\n" );
document.write( "===============<BR>\n" );
document.write( "Multiply by [tan(X) + tan(Y)]<BR>\n" );
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document.write( "cot(x) + cot(y) = cot(y) + cot(x)<BR>\n" );
document.write( "I'm convinced.<BR>\n" );
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