document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=558488>Question 558488</A>: <I><SPAN STYLE=\"word-break: break-all;\"> not sure how to solve this<BR>\n" );
document.write( "2 Sin^2 x- Sin x-1=0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #363093 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=363093\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 2 Sin^2 x- Sin x-1=0<BR>\n" );
document.write( "solve like quadratic equation<BR>\n" );
document.write( "factor:<BR>\n" );
document.write( "(2sinx+1)(sinx-1)=0<BR>\n" );
document.write( "sinx=-1/2<BR>\n" );
document.write( "x=240º and 300º (0 < x < 360º)<BR>\n" );
document.write( "or<BR>\n" );
document.write( "Sinx=1<BR>\n" );
document.write( "x=90º (0 < x < 360º) </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );