document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=960505>Question 960505</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I know the points on the unit circle but how do I find for example: <BR>\n" );
document.write( "cos(11pi/6)\r<BR>\n" );
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document.write( "My teacher hasn't cleared this up for me what are you suppose to do or know in order to break this number down further, I know it has something to do with either subtracting or adding 2pi or pi to the number but how do I know what to use and when? please give as much detail as you can I have a major exam coming up, I must know this stuff.\r<BR>\n" );
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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 #587000 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=587000\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I know the points on the unit circle but how do I find for example: <BR>\n" );
document.write( "cos(11pi/6)<BR>\n" );
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document.write( "11pi/6 is less than 2pi, so there's no adding or subtracting.<BR>\n" );
document.write( "In degrees, it's 330, or -30 = -pi/6<BR>\n" );
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document.write( "cos(-angle) = cos(angle)<BR>\n" );
document.write( "---<BR>\n" );
document.write( "cos(-pi/6) = cos(pi/6)<BR>\n" );
document.write( "= sqrt(3)/2<BR>\n" );
document.write( " </SPAN>\n" );
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