document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=945610>Question 945610</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi, please help me Solve  for the angle theta , where 0 is less and equal to theta which is less and equal to 2pi. Using the half angle formula. <BR>\n" );
document.write( "Here is the problem:\r<BR>\n" );
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document.write( "Cos ^2 theta =1/4\r<BR>\n" );
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document.write( "Thank you <BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #576788 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=576788\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Cos ^2 theta =1/4<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%5E2%28t%29+=+1%2F4 ALIGN=MIDDLE  ALT=\"cos%5E2%28t%29+=+1%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "cos = 1/2<BR>\n" );
document.write( "--> theta = 60, 300 degs<BR>\n" );
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document.write( "cos = -1/2<BR>\n" );
document.write( "--> theta = 120, 240 degs<BR>\n" );
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document.write( "I don't see a need for the half-angle formula.<BR>\n" );
document.write( "You can convert to radians. </SPAN>\n" );
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