document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1036267>Question 1036267</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use a sum or difference formula to find the exact value of the following\r<BR>\n" );
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document.write( "Cos13pie/30 cos2pie/5 - sin13pie/30 sin2pie/5<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #650915 by </B><A HREF=/tutors/aboutme.mpl?userid=Cromlix><B>Cromlix(4381)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Cromlix><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=Cromlix><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=650915\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hi there,<BR>\n" );
document.write( "cos13&#960;/30 cos2&#960;/5 - sin13&#960;/30 sin2&#960;/5<BR>\n" );
document.write( "= cos(13&#960;/30 + 2&#960;/5)<BR>\n" );
document.write( "Take to common denominator = 30<BR>\n" );
document.write( "= cos((13&#960;+12&#960;/30)<BR>\n" );
document.write( "= cos(25&#960;/30)<BR>\n" );
document.write( "= cos (5&#960;/6)<BR>\n" );
document.write( "Hope this helps :-) </SPAN>\n" );
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