document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1007632>Question 1007632</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Okay, so I'm confused on how to answer this... \r<BR>\n" );
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document.write( "The question is... Use the sum-to-product formula to write the product as a sum or difference.\r<BR>\n" );
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document.write( "cos(theta+pi/2) - cos(theta-pi/2)\r<BR>\n" );
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document.write( "How do I find the answer ? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #623555 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=623555\">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%28theta%2Bpi%2F2%29+=+cos%28theta%29cos%28pi%2F2%29+-+sin%28theta%29sin%28pi%2F2%29 ALIGN=MIDDLE  ALT=\"cos%28theta%2Bpi%2F2%29+=+cos%28theta%29cos%28pi%2F2%29+-+sin%28theta%29sin%28pi%2F2%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%28theta%2Bpi%2F2%29+-+cos%28theta-pi%2F2%29+=+-2sin%28theta%29 ALIGN=MIDDLE  ALT=\"cos%28theta%2Bpi%2F2%29+-+cos%28theta-pi%2F2%29+=+-2sin%28theta%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > <---- Final Answer </SPAN>\n" );
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