document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=845480>Question 845480</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If 0 less than or equal to theta less than or equal to  2pi, find the value(s) of theta that make the following statement true: cos2 theta = 1. Express your answer in radians. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #509320 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=509320\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  If 0 <= t <= 2pi, find the value(s) of t that make the following statement true: cos^2(t) = 1. Express your answer in radians.<BR>\n" );
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document.write( "(cos^2(t)-1) = 0<BR>\n" );
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document.write( "Factor:<BR>\n" );
document.write( "(cos(t)-1)(cos(t)+1) = 0<BR>\n" );
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document.write( "cos(t) = 1 or cos(t) = -1<BR>\n" );
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document.write( "t = 0,2pi or t = pi<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( " </SPAN>\n" );
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