document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=535029>Question 535029</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find all solutions in [0, 2pi] to three decimal places. 3cos^2(x)+5cosx=2  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #351907 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=351907\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find all solutions in [0, 2pi] to three decimal places. 3cos^2(x)+5cosx=2<BR>\n" );
document.write( "**<BR>\n" );
document.write( "3cos^2(x)+5cosx=2<BR>\n" );
document.write( "3cos^2(x)+5cosx-2=0<BR>\n" );
document.write( "(3cosx-1)(cosx+2)=0<BR>\n" );
document.write( "..<BR>\n" );
document.write( "cosx+2=0<BR>\n" );
document.write( "cosx=-2 (reject, -1<cosx<1)<BR>\n" );
document.write( "..<BR>\n" );
document.write( "3cosx-1=0<BR>\n" );
document.write( "cosx=1/3<BR>\n" );
document.write( "arccosx(1/3)=1.231 and 5.052 radians (in quadrants I and IV) </SPAN>\n" );
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