document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=725548>Question 725548</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 2cos^2theta-5costheta-3=0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #444195 by </B><A HREF=/tutors/aboutme.mpl?userid=nshah11><B>nshah11(47)</B></A><img src=\"/images/stars/stars-07.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nshah11><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=444195\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 2cos^2(t) - 5cos(t) - 3 = 0\r<BR>\n" );
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document.write( "2cos^2(t) - 6cos(t) + cos(t) - 3 = 0\r<BR>\n" );
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document.write( "2cos(t)(cos(t) - 3) + cos(t) - 3 = 0\r<BR>\n" );
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document.write( "(2cos(t) + 1)(cos(t) - 3) = 0\r<BR>\n" );
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document.write( "cos(t) = 3 (Not possible since cos(t) ranges from -1 to 1).\r<BR>\n" );
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document.write( "cos(t) = -1/2 => t = 2pi/3, 4pi/3 on the interval [0, 2pi]. </SPAN>\n" );
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