document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1028370>Question 1028370</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use a product-to-sum formula to find the exact value of the expression. Do not use a calculator.\r<BR>\n" );
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document.write( "cos 5&#960;/12  sin &#960;/12 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #643451 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=643451\">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=cosx%2Asiny+=%281%2F2%29%28sin%28x%2By%29+-+sin%28x-y%29%29 ALIGN=MIDDLE  ALT=\"cosx%2Asiny+=%281%2F2%29%28sin%28x%2By%29+-+sin%28x-y%29%29\"   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=cos%28%285pi%29%2F12%29%2Asin%28pi%2F2%29+=%281%2F2%29%28sin%28%286pi%29%2F12%29+-+sin%28%284pi%29%2F12%29%29 ALIGN=MIDDLE   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=cos%28%285pi%29%2F12%29%2Asin%28pi%2F2%29+=%281%2F2%29%28sin%28pi%2F2%29+-+sin%28pi%2F3%29%29+=+%281-sqrt%283%29%2F2%29%2F2+=+%282-sqrt%283%29%29%2F4 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( " </SPAN>\n" );
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