document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=966445>Question 966445</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find all solutions to the equation.\r<BR>\n" );
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document.write( "2 cosx + 1 = 0\r<BR>\n" );
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document.write( "If you could please show all steps, I would appreciate it. 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 #590684 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=590684\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find all solutions to the equation.<BR>\n" );
document.write( "If you mean<BR>\n" );
document.write( "2cos(x) + 1 = 0<BR>\n" );
document.write( "Subtract 1, divide by 2.<BR>\n" );
document.write( "cos(x) = -1/2<BR>\n" );
document.write( "x = 120 ± 2n*360 degs, n = 0,1,2,3...<BR>\n" );
document.write( "x = 240 ± 2n*360 degs, n = 0,1,2,3... </SPAN>\n" );
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