document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=870187>Question 870187</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Verify the identity<BR>\n" );
document.write( "(cos x)/ ( 1 + sin x) + ( cos x )/(1 - sin x) =  2 sec x<BR>\n" );
document.write( "Can you please help me ? Thanks so much in advance:) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #524732 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=524732\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (cos x)/ ( 1 + sin x) + ( cos x )/(1 - sin x) =  2 sec x\r<BR>\n" );
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document.write( "(cos x)/ ( 1 + sin x) + ( cos x )/(1 - sin x) \r<BR>\n" );
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document.write( "(cosx(1-sinx)+cos x(1+sin x))/(1-sin^2x)\r<BR>\n" );
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document.write( "(cosx-cosx.sinx)+cos x+cosx.sin x))/(1-sin^2x)\r<BR>\n" );
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document.write( "2cosx/cos^2x\r<BR>\n" );
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document.write( "2/cos x<BR>\n" );
document.write( "2sec x\r<BR>\n" );
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document.write( "proved\r<BR>\n" );
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