document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=397182>Question 397182</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Verify following is an identity.<BR>\n" );
document.write( "tan^2(x)+1= (tan(x)/(cos(x))(sin(x))<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #281547 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=281547\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Verify following is an identity.<BR>\n" );
document.write( "tan^2(x)+1= (tan(x)/(cos(x))(sin(x))\r<BR>\n" );
document.write( "\n" );
document.write( "starting with the right-hand side.<BR>\n" );
document.write( "(tan(x)/(cos(x))(sin(x)<BR>\n" );
document.write( "=(sin/cos)/(cos)(sin)<BR>\n" );
document.write( "=(sin)/(cos^2)(sin)<BR>\n" );
document.write( "=1/cos^2<BR>\n" );
document.write( "=(sin^2+cos^2)/(cos^2)<BR>\n" );
document.write( "=(sin^2/cos^2)+(cos^2/cos^2)<BR>\n" );
document.write( "=tan^2+1=left-hand side<BR>\n" );
document.write( "verified:right-hand side=left-hand side<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );