document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=622092>Question 622092</A>: <I><SPAN STYLE=\"word-break: break-all;\"> please help me verify \r<BR>\n" );
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document.write( "verify identity: <BR>\n" );
document.write( "cosx(tan^2x+1)=secx </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #391106 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=391106\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This question was just answered and I'm not sure if this is the same person or not. If so, please let me know where you're stuck and what part(s) do not make sense to you. Thanks.\r<BR>\n" );
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document.write( "cosx(tan^2x+1)=secx\r<BR>\n" );
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document.write( "cosx*tan^2x+cosx=secx\r<BR>\n" );
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document.write( "cosx*(sin^2x)/(cos^2x)+cosx=secx\r<BR>\n" );
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document.write( "(sin^2x)/(cosx)+cosx=secx\r<BR>\n" );
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document.write( "(sin^2x)/(cosx)+cosx*(cosx)/(cosx)=secx\r<BR>\n" );
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document.write( "(sin^2x)/(cosx)+(cos^2x)/(cosx)=secx\r<BR>\n" );
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document.write( "(sin^2x+cos^2x)/(cosx)=secx\r<BR>\n" );
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document.write( "1/(cosx)=secx\r<BR>\n" );
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document.write( "secx=secx\r<BR>\n" );
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document.write( "So this verifies the identity. </SPAN>\n" );
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