document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=895850>Question 895850</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Why we should solve like this?\r<BR>\n" );
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document.write( "If <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=CosX+=+-1%2F2 ALIGN=MIDDLE  ALT=\"CosX+=+-1%2F2\"   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=CosX+=+Cos%282%28pi%29%29%2F3 ALIGN=MIDDLE  ALT=\"CosX+=+Cos%282%28pi%29%29%2F3\"   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+=+2n%28pi%29+%2B-+2%28pi%29%2F3 ALIGN=MIDDLE  ALT=\"X+=+2n%28pi%29+%2B-+2%28pi%29%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Why can't we solve like this???\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=CosX+=+-1%2F2 ALIGN=MIDDLE  ALT=\"CosX+=+-1%2F2\"   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=CosX+=+-Cos%28pi%29%2F3 ALIGN=MIDDLE  ALT=\"CosX+=+-Cos%28pi%29%2F3\"   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=CosX+=+Cos%28-%28pi%29%29%2F3 ALIGN=MIDDLE  ALT=\"CosX+=+Cos%28-%28pi%29%29%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Because we can put minus sign inside in Cos...\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=X+=+2n%28pi%29+%2B-+%28-pi%29%2F3 ALIGN=MIDDLE  ALT=\"X+=+2n%28pi%29+%2B-+%28-pi%29%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" > ???? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #543046 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=543046\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Why we should solve like this?\r<BR>\n" );
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document.write( "If <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=CosX+=+-1%2F2 ALIGN=MIDDLE  ALT=\"CosX+=+-1%2F2\"   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=CosX+=+Cos%282%28pi%29%29%2F3 ALIGN=MIDDLE  ALT=\"CosX+=+Cos%282%28pi%29%29%2F3\"   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+=+2n%28pi%29+%2B-+2%28pi%29%2F3 ALIGN=MIDDLE  ALT=\"X+=+2n%28pi%29+%2B-+2%28pi%29%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Why can't we solve like this???\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=CosX+=+-1%2F2 ALIGN=MIDDLE  ALT=\"CosX+=+-1%2F2\"   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=CosX+=+-Cos%28pi%29%2F3 ALIGN=MIDDLE  ALT=\"CosX+=+-Cos%28pi%29%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "cos(-x) <> -cos(x)<BR>\n" );
document.write( "cos(-x) = cos(x)<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=CosX+=+Cos%28-%28pi%29%29%2F3 ALIGN=MIDDLE  ALT=\"CosX+=+Cos%28-%28pi%29%29%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Because we can put minus sign inside in Cos...\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=X+=+2n%28pi%29+%2B-+%28-pi%29%2F3 ALIGN=MIDDLE  ALT=\"X+=+2n%28pi%29+%2B-+%28-pi%29%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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