document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=680196>Question 680196</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve algebraically for exact solutions in the interval [0,2pi) <BR>\n" );
document.write( "Sin(5x)+sin(10x) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #422273 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=422273\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Solve algebraically for exact solutions in the interval [0,2pi) <BR>\n" );
document.write( "Sin(5x)+sin(10x)<BR>\n" );
document.write( "Identity: sum to product formula: sin s+sin t=2 sin(s+t)/2*cos(s-t)/2<BR>\n" );
document.write( "Sin(10x)+sin(5x)<BR>\n" );
document.write( "=2sin[(10x+5x)/2]*cos[(10x-5x)/2]<BR>\n" );
document.write( "=2sin7.5x*cos2.5x </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );