document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=980560>Question 980560</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solver the given trig equation exactly on 0<=theta<2pi\r<BR>\n" );
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document.write( "question is: 2cos(theta/2)= -sqrt2\r<BR>\n" );
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document.write( "So far I divided the 2 on the left and the right side of the equation leaving me with, Cos(theta/2)= -sqrt2/2<BR>\n" );
document.write( "Now, I'm lost...\r<BR>\n" );
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document.write( "(this is a pre-cal question. The topic list is blank for me. Sorry)<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 #601694 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=601694\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Solver the given trig equation exactly on 0<=theta<2pi\r<BR>\n" );
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document.write( "question is: 2cos(theta/2)= -sqrt2\r<BR>\n" );
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document.write( "So far I divided the 2 on the left and the right side of the equation leaving me with, Cos(theta/2)= -sqrt2/2<BR>\n" );
document.write( "------------<BR>\n" );
document.write( "Use the double angle formula:<BR>\n" );
document.write( "cos(2t) = 2cos^2(t) - 1<BR>\n" );
document.write( "= 2*(1/2) - 1<BR>\n" );
document.write( "cos(theta) = 0<BR>\n" );
document.write( "----<BR>\n" );
document.write( "theta = pi/2, 3pi/2\r<BR>\n" );
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