document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=920123>Question 920123</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the exact value of the trigonometric function at the given real number.\r<BR>\n" );
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document.write( "(a)   cos 11&#960;/6=   \r<BR>\n" );
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document.write( "(b)  cos(&#8722;11&#960;/6) =   \r<BR>\n" );
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document.write( "(c)  cos 17&#960;/6 = \r<BR>\n" );
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document.write( "Please explain<BR>\n" );
document.write( "Thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #558167 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><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=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=558167\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (a) cos 11&#960;/6= &#8730;3/2<BR>\n" );
document.write( " (b) cos(&#8722;11&#960;/6) =  &#8730;3/2  cos(-&#952;) = cos (&#952;)<BR>\n" );
document.write( " (c) cos 17&#960;/6 = cos (17&#960;/6) = cos(5&#960;/6 + 2&#960; ) =  cos(5&#960;/6) =  -&#8730;3/2\r<BR>\n" );
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document.write( "(cosx, sinx) Unit Circle Summary for Your reference<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/display-illustration.mpl?tutor=ewatrrr&illustration_name=wheel_smaller.jpg\">. </SPAN>\n" );
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