document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=495687>Question 495687</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the exact value of the expression:\r<BR>\n" );
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document.write( "sin (3pi/4) cos (5pi/6) - cos(3pi/4) sin (5pi/6).\r<BR>\n" );
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document.write( "Thank You </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #336258 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=336258\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the exact value of the expression: <BR>\n" );
document.write( "sin (3pi/4) cos (5pi/6) - cos(3pi/4) sin (5pi/6)<BR>\n" );
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document.write( "Addition formula for sin function:<BR>\n" );
document.write( "sin(s-t)=sin s cos t - cos s sin t<BR>\n" );
document.write( "For given function:<BR>\n" );
document.write( "s=3&#960;/4<BR>\n" );
document.write( "t=5&#960;/6<BR>\n" );
document.write( "..<BR>\n" );
document.write( "sin (3&#960;/4) cos (5&#960;/6) - cos(3&#960;/4) sin (5&#960;/6)<BR>\n" );
document.write( "=sin(s-t)<BR>\n" );
document.write( "=sin(3&#960;/4-5&#960;/6)<BR>\n" );
document.write( "=sin(9&#960;/12-10&#960;/12)<BR>\n" );
document.write( "=sin(-&#960;/12)=-0.2588 </SPAN>\n" );
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