document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=967392>Question 967392</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find all solutions to the equation below on the interval [0, 2&#960;). Enter them from smallest to largest; enter DNE in any empty blank. \r<BR>\n" );
document.write( "\n" );
document.write( "cos (2x) + cos (x) = 2\r<BR>\n" );
document.write( "\n" );
document.write( "Thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #591253 by </B><A HREF=/tutors/aboutme.mpl?userid=t0hierry><B>t0hierry(194)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=t0hierry><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=t0hierry><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=591253\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You know the highest value of cosine is 1<BR>\n" );
document.write( "so if the sum of two cosine is 2<BR>\n" );
document.write( "each must be 1<BR>\n" );
document.write( "cos(xx) = 1<BR>\n" );
document.write( "x = 2pi<BR>\n" );
document.write( "x = 0 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );