document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=478827>Question 478827</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Factor sin8&#920; + 2sin4&#920;cos4&#920; + cos8&#920;?\r<BR>\n" );
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document.write( "Verify (cos2&#920; + sin2&#920;)/(cos&#920;) = sec&#920;? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #328104 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=328104\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If those are exponents:<BR>\n" );
document.write( "Sub x for sine and y for cosine:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%5E8+%2B+2xy+%2B+y%5E8 ALIGN=MIDDLE  ALT=\"x%5E8+%2B+2xy+%2B+y%5E8\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Can you do it now?<BR>\n" );
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document.write( "(cos^2 + sin^2)/cos = sec<BR>\n" );
document.write( "1/cos = sec<BR>\n" );
document.write( "I'm convinced.<BR>\n" );
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