document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=841860>Question 841860</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1-2cos^2x=(tan^2x-1)/(tan^2x+1)<BR>\n" );
document.write( "i need help with this equation. i need to have it in a t-table format. can you please help me?! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #507246 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=507246\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1-2cos^2x=(tan^2x-1)/(tan^2x+1)<BR>\n" );
document.write( "------<BR>\n" );
document.write( "(1-cos^2(x)-cos^2(x) = (tan^2(x)-1)/sec^2(x)<BR>\n" );
document.write( "--------<BR>\n" );
document.write( "sin^2(x)-cos^2(x) = (tan^2(x)-1)/sec^2(x)<BR>\n" );
document.write( "------<BR>\n" );
document.write( "Cross-multiply to get:<BR>\n" );
document.write( "sin^2(x)*sec^2(x) - 1 = tan^2(x)-1<BR>\n" );
document.write( "----<BR>\n" );
document.write( "sin^2(x)/cos^2(x) - 1 = tan^2(x)-1<BR>\n" );
document.write( "------<BR>\n" );
document.write( "tan^2(x)-1 = tan^2(x)-1<BR>\n" );
document.write( "===============================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "======================\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );