document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=203978>Question 203978</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Show that the sum of the two sine function is again a sine function:<BR>\n" );
document.write( "5sin(x-2) + 5sin(x+2)=?<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 #154101 by </B><A HREF=/tutors/aboutme.mpl?userid=RAY100><B>RAY100(1637)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=RAY100><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=154101\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 5sin(x-2) +5sin(x-2)<BR>\n" );
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document.write( "5{sin(x-2) + sin(x-2)}<BR>\n" );
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document.write( "using  sum  and  difference  identities<BR>\n" );
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document.write( "5{(sinxcos2-cosxsin2) + ( sinxcos2 +cosxsin2)}<BR>\n" );
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document.write( "5{2sinxcos2}<BR>\n" );
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document.write( "10sinxcos2<BR>\n" );
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document.write( "(10cos2)sinx<BR>\n" );
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document.write( "-4.16 sinx<BR>\n" );
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document.write( "Therefore,  this  is  a  sin  function<BR>\n" );
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