document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=885442>Question 885442</A>: <I><SPAN STYLE=\"word-break: break-all;\"> which expression is equivalent to cos(5 theta) plus cos(3 theta) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #535161 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=535161\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> which expression is equivalent to cos(5 theta) plus cos(3 theta)<BR>\n" );
document.write( "use x for theta<BR>\n" );
document.write( "Sum-to-Product Formula:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos5x%2Bcos3x=2cos%28%285x%2B3x%29%2F2%29cos%28%285x-3x%29%2F2%29=2cos4x%2Acosx ALIGN=MIDDLE  ALT=\"cos5x%2Bcos3x=2cos%28%285x%2B3x%29%2F2%29cos%28%285x-3x%29%2F2%29=2cos4x%2Acosx\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );