document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1191167>Question 1191167</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+sin%5E2%28pi%2F9%29+%2B++sin%5E2%282pi%2F9%29+%2B+sin%5E2%283pi%2F9%29+%2B+sin%5E2%284pi%2F9%29+=+9%2F4+ ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >, without the use of a calculator, evaluate <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+cos%5E2%28pi%2F9%29+%2B++cos%5E2%282pi%2F9%29+%2B+cos%5E2%283pi%2F9%29+%2B+cos%5E2%284pi%2F9%29+ ALIGN=MIDDLE   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 #822946 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13203)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=822946\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+sin%5E2%28pi%2F9%29+%2B++sin%5E2%282pi%2F9%29+%2B+sin%5E2%283pi%2F9%29+%2B+sin%5E2%284pi%2F9%29=%281-+cos%5E2%28pi%2F9%29%29+%2B++%281-cos%5E2%282pi%2F9%29%29+%2B+%281-cos%5E2%283pi%2F9%29%29+%2B+%281-cos%5E2%284pi%2F9%29%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=9%2F4+=+%281-+cos%5E2%28pi%2F9%29%29+%2B++%281-cos%5E2%282pi%2F9%29%29+%2B+%281-cos%5E2%283pi%2F9%29%29+%2B+%281-cos%5E2%284pi%2F9%29%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+cos%5E2%28pi%2F9%29+%2B++cos%5E2%282pi%2F9%29+%2B+cos%5E2%283pi%2F9%29+%2B+cos%5E2%284pi%2F9%29+=+4-9%2F4+=+7%2F4 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "ANSWER: 7/4<br><BR>\n" );
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