document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=241753>Question 241753</A>: <I><SPAN STYLE=\"word-break: break-all;\"> what is the value of the expression cos-1 (&#8730;2\2) ? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #177039 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=177039\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> cos-1 (&#8730;2\2) <BR>\n" );
document.write( "is asking you what angle x would be if <BR>\n" );
document.write( "cos(x) = &#8730;2\2<BR>\n" );
document.write( ".<BR>\n" );
document.write( "In this case, looking at the \"unit circle\" it would be<BR>\n" );
document.write( "(pi/4) radians<BR>\n" );
document.write( "or <BR>\n" );
document.write( "45 degrees </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );