document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=980947>Question 980947</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find all solution of the equation in the interval [0,2pi)\r<BR>\n" );
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document.write( "4cos(x) = ((sin^2)(x)) + 4 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #602003 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=602003\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find all solution of the equation in the interval [0,2pi)\r<BR>\n" );
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document.write( "4cos(x) = sin^2(x) + 4<BR>\n" );
document.write( "4cos(x) = 1 - cos^2(x) + 4<BR>\n" );
document.write( "cos^2 + 4cos - 5 = 0<BR>\n" );
document.write( "(cos + 5)*(cos - 1) = 0<BR>\n" );
document.write( "cos = -5 (Ignore)<BR>\n" );
document.write( "=================<BR>\n" );
document.write( "cos = 1<BR>\n" );
document.write( "x = 0 </SPAN>\n" );
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