document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1197388>Question 1197388</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is Sec(-π/6)<BR>\n" );
document.write( "Kindly explain much appreciated. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #830633 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13332)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=830633\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "(1) SEC(x) is 1/COS(x).<br><BR>\n" );
document.write( "(2) An angle of -π/6 (-30 degrees) is in quadrant IV, with a reference angle of 30 degrees.<br><BR>\n" );
document.write( "(3) The cosine of the reference angle is sqrt(3)/2.<br><BR>\n" );
document.write( "(4) Cosine is positive in quadrant IV, so COS(-π/6) is sqrt(3)/2.<br><BR>\n" );
document.write( "(5) So SEC(-π/6) is 2/sqrt(3).<br><BR>\n" );
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