document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=854411>Question 854411</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Cos^2 x=2-cosx<BR>\n" );
document.write( "Solve the equation for all real values of x </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #514666 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=514666\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Cos^2 x=2-cosx<BR>\n" );
document.write( "------------------<BR>\n" );
document.write( "cos^2 + cos - 2 = 0<BR>\n" );
document.write( "------<BR>\n" );
document.write( "Factor:<BR>\n" );
document.write( "(cos+2)(cos-1) = 0<BR>\n" );
document.write( "cos = -2 (extraneous)<BR>\n" );
document.write( "OR<BR>\n" );
document.write( "cos = 1<BR>\n" );
document.write( "----<BR>\n" );
document.write( "x = arccos(1) = 0 degrees or 0 radians<BR>\n" );
document.write( "=================<BR>\n" );
document.write( "cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "===================== </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );