document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=236960>Question 236960</A>: <I><SPAN STYLE=\"word-break: break-all;\"> PLEASE HELP ME SOLVE THIS TRIGONOMETRIC FUNCTIONS:<BR>\n" );
document.write( "cos(-140degree)<BR>\n" );
document.write( "there are the three poossible anwers<BR>\n" );
document.write( "a)cos(-40degree)<BR>\n" );
document.write( "b)-cos 40degree<BR>\n" );
document.write( "c)cos 40degree </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #174295 by </B><A HREF=/tutors/aboutme.mpl?userid=solver91311><B>solver91311(24713)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=solver91311><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=solver91311><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=174295\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <font face=\"Garamond\" size=\"+2\">\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\Large \cos(x)\"> is positive in Quadrant I and IV.  40 degrees is in QI, -40 degrees is in QIV.  Therefore <IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\Large \cos(-40)\ =\ \cos(40)\">, and answer a and c are the same answer.  b is the only one that is different, so it has to be correct.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "John<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE e^{i\pi} + 1 = 0\"><BR>\n" );
document.write( "</font> </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );