document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=429870>Question 429870</A>: <I><SPAN STYLE=\"word-break: break-all;\"> cos(x+(&#960;/2))-cos(2x)=0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #298548 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=298548\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%28x%2B+pi%2F2%29+=+cos%282x%29 ALIGN=MIDDLE  ALT=\"cos%28x%2B+pi%2F2%29+=+cos%282x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "In the interval [0, <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2pi ALIGN=MIDDLE  ALT=\"2pi\"   DISABLED_style= \"max-width:90%; height:auto;\" >), either \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2B+pi%2F2+=+2x ALIGN=MIDDLE  ALT=\"x%2B+pi%2F2+=+2x\"   DISABLED_style= \"max-width:90%; height:auto;\" >, or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+%2B+pi%2F2+=+2%2Api+-+2x ALIGN=MIDDLE  ALT=\"x+%2B+pi%2F2+=+2%2Api+-+2x\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "==> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+pi%2F2 ALIGN=MIDDLE  ALT=\"x+=+pi%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" >, or \r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3x+=+%283%2Api%29%2F2 ALIGN=MIDDLE  ALT=\"3x+=+%283%2Api%29%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" >, or <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+pi%2F2 ALIGN=MIDDLE  ALT=\"x+=+pi%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" > (Same as the first solution.)\r<BR>\n" );
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document.write( "Therefore the general solution is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=pi%2F2+%2B+2n%2Api ALIGN=MIDDLE  ALT=\"pi%2F2+%2B+2n%2Api\"   DISABLED_style= \"max-width:90%; height:auto;\" >, where n is any integer. </SPAN>\n" );
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