document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=677928>Question 677928</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Please show work and use a product of sines and cosines formula to rewrite cos(5t) sin(8t)<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #421185 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=421185\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Please show work and use a product of sines and cosines formula to rewrite cos(5t) sin(8t)<BR>\n" );
document.write( "product-to-sum formula:<BR>\n" );
document.write( "sin x cos y=1/2[sin(x+y)-sin(x-y)]<BR>\n" );
document.write( "cos(5t) sin(8t)= sin(8t) cos(5t)<BR>\n" );
document.write( "=1/2[sin(8t+5t)-sin(8t-5t)]<BR>\n" );
document.write( "=1/2[sin(13t)-sin(3t)] </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );