document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=941995>Question 941995</A>: <I><SPAN STYLE=\"word-break: break-all;\"> without using a calculator, find the smallest positive theta in degree and radian measure for which\r<BR>\n" );
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document.write( "cos theta = - 1/2<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 #574204 by </B><A HREF=/tutors/aboutme.mpl?userid=josmiceli><B>josmiceli(19441)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josmiceli><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=josmiceli><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=574204\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If the sign were not negative, then the rotating<BR>\n" );
document.write( "vector would form a  30-60-90 triangle in the <BR>\n" );
document.write( "1st quadrant. The cosine of 60 degrees is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+1%2F2+ ALIGN=MIDDLE  ALT=\"+1%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" > <BR>\n" );
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document.write( "As the vector rotates, the first time that the cosine<BR>\n" );
document.write( "is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+-1%2F2+ ALIGN=MIDDLE  ALT=\"+-1%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" > is when<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+theta+=+120+ ALIGN=MIDDLE  ALT=\"+theta+=+120+\"   DISABLED_style= \"max-width:90%; height:auto;\" > or<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+theta+=+2%2Api%2F3+ ALIGN=MIDDLE  ALT=\"+theta+=+2%2Api%2F3+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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