document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=744248>Question 744248</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find solutions in radians for 0 less then or equal to x less then 2pi:\r<BR>\n" );
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document.write( "sin^2(3x)-3sin(3x)-4=0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #453575 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=453575\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Find solutions in radians for 0 less then [sic] or equal to x less then 2pi:<BR>\n" );
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document.write( "It's \"less than\", not less then<BR>\n" );
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document.write( "Say it like this:  0 <= x <= 2pi<BR>\n" );
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document.write( "sin^2(3x)-3sin(3x)-4=0<BR>\n" );
document.write( "Sub u for sin(3x)<BR>\n" );
document.write( "u^2 - 3u - 4 = 0<BR>\n" );
document.write( "(u - 4)*(u + 1) = 0<BR>\n" );
document.write( "u = 4 --> no real # for arcsin(4)<BR>\n" );
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document.write( "u = -1 --> sin(3x) = -1<BR>\n" );
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document.write( "sin(3x)=-1<BR>\n" );
document.write( "3x = 3pi/2, 7pi/2, 11pi/2<BR>\n" );
document.write( "x = pi/2, 7pi/6, 11pi/6 </SPAN>\n" );
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