document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1035784>Question 1035784</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I have to find the exact value for this expression: sin 260 degrees cos 20 degrees - cos 260 degrees sin 20 degrees  \r<BR>\n" );
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document.write( "help? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #650423 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=650423\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This is of the form sin a*cos b-cos a*sin b<BR>\n" );
document.write( "That is sin (a-b)=sin (260deg-20deg)=sin (240 deg)<BR>\n" );
document.write( "That is the same as -sin (60 deg)=- sqrt(3)/2<BR>\n" );
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