document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=576936>Question 576936</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1. find the value of cos 7pi/6 sin 3 pi/4 + sin 7pi/6 cos 3pi/4 \r<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 #370027 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=370027\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1. find the value of cos 7pi/6 sin 3 pi/4 + sin 7pi/6 cos 3pi/4 <BR>\n" );
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document.write( "Use the sum of angles formula for sines.<BR>\n" );
document.write( "sin(A+B) = sin(A)cos(B) + sin(B)cos(A)<BR>\n" );
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document.write( "--> sin(3pi/4 + 7pi/6)<BR>\n" );
document.write( "= sin(23pi/12)<BR>\n" );
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