document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=806253>Question 806253</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The formula:\r<BR>\n" );
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document.write( "cos &#945; - cos &#946; = -2 sin(&#945;+&#946;/2)sin(&#945;-&#946;/2)\r<BR>\n" );
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document.write( "can be used to change a ____________ of two cosines into the _______________ of two sine expressions. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #485744 by </B><A HREF=/tutors/aboutme.mpl?userid=oscargut><B>oscargut(2103)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=oscargut><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=oscargut><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=485744\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Answer:\r<BR>\n" );
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document.write( "substraction\r<BR>\n" );
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document.write( "product\r<BR>\n" );
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document.write( "If you need more help today, you can contact me now at:\r<BR>\n" );
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document.write( "mthman@gmail.com\r<BR>\n" );
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document.write( "Thanks </SPAN>\n" );
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