document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=989575>Question 989575</A>: <I><SPAN STYLE=\"word-break: break-all;\"> what is the value of cot 0 and sec -15&#960;/7? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #609869 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=609869\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> what is the value of cot 0 <BR>\n" );
document.write( "cot = 1/tan<BR>\n" );
document.write( "tan(0) = 0<BR>\n" );
document.write( "cot = 1/0 --> infinity or undefined.<BR>\n" );
document.write( "====================<BR>\n" );
document.write( "and sec -15pi/7?<BR>\n" );
document.write( "-15pi/7 = -2pi - pi/7<BR>\n" );
document.write( "sec(-x) = sec(s) --> sec(pi/7)<BR>\n" );
document.write( "sec(pi/7) = 1/cos(pi/7)<BR>\n" );
document.write( "I would use a calculator.<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );