document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=929785>Question 929785</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( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+sin%283pi%2F5%29cos%287pi%2F30%29%2Bcos%283pi%2F5%29sin%287pi%2F30%29+ ALIGN=MIDDLE  ALT=\"+sin%283pi%2F5%29cos%287pi%2F30%29%2Bcos%283pi%2F5%29sin%287pi%2F30%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #564464 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=564464\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Identity: sin(x+y)=sinxcosy+cosxsiny<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%283pi%2F5%29cos%287pi%2F30%29%2Bcos%283pi%2F5%29sin%287pi%2F30%29=sin%283pi%2F5%2B7pi%2F30%29%0D%0A=sin%2818pi%2F30%2B7pi%2F30%29=sin%2825pi%2F30%29=sin%285pi%2F6%29=1%2F2 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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