document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=860877>Question 860877</A>: <I><SPAN STYLE=\"word-break: break-all;\"> find two values of t in [0,2pi] that make cos t = -(sqrt3/2) true  without a calculator<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #518678 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=518678\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  Find two values of t in [0,2pi] that make cos t = -sqrt(3)/2  true without a calculator<BR>\n" );
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document.write( "Reference angle:: t = pi/3<BR>\n" );
document.write( "Solution in QII:: t = (2/3)pi<BR>\n" );
document.write( "Solution in QIII:: t = (4/3)pi<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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