document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=921574>Question 921574</A>: <I><SPAN STYLE=\"word-break: break-all;\"> can someone please help me with this question ? A water wheel rotates through the angle theta,the water level L behind the wheel changes according to the equation: L =2-2sintheta-4cos^2theta where l is measured in inches. determine the values of theta for which the water level is zero. find the exact values. do not use a claculator </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #559075 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=559075\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> L =2 - 2sin(t) - 4cos^2(t) = 0<BR>\n" );
document.write( "1 - sin(t) - 2cos^2(t) = 0<BR>\n" );
document.write( "1 - sin(t) - 2(1 - sin^2(t)) = 0<BR>\n" );
document.write( "2sin^2 - sin - 1 = 0<BR>\n" );
document.write( "(2sin + 1)*(sin - 1) = 0<BR>\n" );
document.write( "sin = 1 --> theta = 90 + n*180 degs, n = 0,1,2,3...<BR>\n" );
document.write( "----<BR>\n" );
document.write( "sin = -1/2 --> theta = 210 + n*360 degs, n = 0,1,2,3...<BR>\n" );
document.write( "sin = -1/2 --> theta = 330 + n*360 degs, n = 0,1,2,3... </SPAN>\n" );
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