document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=844012>Question 844012</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Show that sin(alpha+beta)=sin alpha*cos beta +cos alpha*sin beta.\r<BR>\n" );
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document.write( "I have no idea how to prove this. We have not proved algebraically yet, which is the only way people prove it on the internet. Please help! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #508705 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=508705\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> To see a geometric proof use Google to search<BR>\n" );
document.write( "for \"khan academy trig sin(a+b) proof\".<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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