document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=259019>Question 259019</A>: <I><SPAN STYLE=\"word-break: break-all;\"> find two values of theta in degrees (0 greater than or equal to theta< 360 degrees) if cos of theta= - (squareroot of 3)/2, not using a calculator. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #190736 by </B><A HREF=/tutors/aboutme.mpl?userid=drk><B>drk(1908)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=drk><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=190736\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In this problem, you must be familiar with the unit circle or the special triangles 45-45-90; 30-60-90.<BR>\n" );
document.write( "cos(theta) = sqrt(3)/2 is a 30 degree angle.<BR>\n" );
document.write( "Now since it is negative, it is in quad II or III.<BR>\n" );
document.write( "in quad II: 180 - 30 = 150 degrees<BR>\n" );
document.write( "in quad III: 180 + 30 = 210 degrees </SPAN>\n" );
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