document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=882470>Question 882470</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the exact value of the following expression...\r<BR>\n" );
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document.write( "cos(sin^-1(3/5) + cos^-1(5/13)) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #532956 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=532956\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find the exact value of the following expression... <BR>\n" );
document.write( "cos(sin^-1(3/5) + cos^-1(5/13))<BR>\n" );
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document.write( "let x=angle whose sin=3/5<BR>\n" );
document.write( "sinx=3/5<BR>\n" );
document.write( "cosx=4/5<BR>\n" );
document.write( "..<BR>\n" );
document.write( "let y=angle whose cos=5/13<BR>\n" );
document.write( "cosy=5/13<BR>\n" );
document.write( "siny=12/13<BR>\n" );
document.write( "..<BR>\n" );
document.write( "cos(sin^-1(3/5) + cos^-1(5/13))=cos(x+y)=cosxcosy-sinxsiny<BR>\n" );
document.write( "cos(x+y)=4/5*5/13-3/5*12/13=20/65-36/65=-16/65 </SPAN>\n" );
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