document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=408715>Question 408715</A>: <I><SPAN STYLE=\"word-break: break-all;\"> sin(a+b)-sin(a-b)=2cosasinb<BR>\n" );
document.write( "How do I solve this problem? I am so close to a break down over this. Help!!<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 #287871 by </B><A HREF=/tutors/aboutme.mpl?userid=richard1234><B>richard1234(7193)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richard1234><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=richard1234><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=287871\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%28a%2Bb%29+-+sin%28a-b%29+=+sin%28a%29cos%28b%29+%2B+sin%28b%29cos%28a%29+-+%28sin%28a%29cos%28b%29+-+sin%28b%29cos%28a%29%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" >. The <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%28a%29cos%28b%29 ALIGN=MIDDLE  ALT=\"sin%28a%29cos%28b%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > terms cancel out, so our expression is equal to <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sin%28b%29cos%28a%29+-+%28-sin%28b%29cos%28a%29%29+=+2sin%28b%29cos%28a%29 ALIGN=MIDDLE  ALT=\"sin%28b%29cos%28a%29+-+%28-sin%28b%29cos%28a%29%29+=+2sin%28b%29cos%28a%29\"   DISABLED_style= \"max-width:90%; height:auto;\" > which is the RHS, so we're done. </SPAN>\n" );
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