document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1162811>Question 1162811</A>: <I><SPAN STYLE=\"word-break: break-all;\"> prove that:<BR>\n" );
document.write( "            cos2A/1+sin2A = 1-tanA/1+tanA </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #786703 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=786703\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> prove that:<BR>\n" );
document.write( "            cos2A/1+sin2A = 1-tanA/1+tanA<BR>\n" );
document.write( "===========<BR>\n" );
document.write( "Is it cos(2A) ?<BR>\n" );
document.write( "or cos^2(A) ?<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "Use parentheses.<BR>\n" );
document.write( "They are free.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );