document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=668482>Question 668482</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Simplify each expresion:<BR>\n" );
document.write( "Sin(-x)cot(-x)=<BR>\n" );
document.write( "sin(x)/cos(-x) + sin(-x)/cos(x)=<BR>\n" );
document.write( "cos(x) + cos(-x)= </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #415902 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=415902\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Simplify each expresion:<BR>\n" );
document.write( "Sin(-x)cot(-x)<BR>\n" );
document.write( "=sin(-x)*cos(-x)/sin(-x)<BR>\n" );
document.write( "=cos(-x)<BR>\n" );
document.write( "..<BR>\n" );
document.write( "sin(x)/cos(-x) + sin(-x)/cos(x)<BR>\n" );
document.write( "=sin(x)/cos(x)-sin(x)/cos(x)<BR>\n" );
document.write( "=0<BR>\n" );
document.write( "..<BR>\n" );
document.write( "cos(x) + cos(-x)<BR>\n" );
document.write( "=cos(x) + cos(x)<BR>\n" );
document.write( "=2cos(x) </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );