document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=712340>Question 712340</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve each equation\r<BR>\n" );
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document.write( "19) 1 + sin theta = 2cos^2 theta </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #438002 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=438002\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1 + sin theta = 2cos^2 theta<BR>\n" );
document.write( "1+sinx = 2cos^2x<BR>\n" );
document.write( "1+sinx = 2(1-sin^2x<BR>\n" );
document.write( "1+sinx = 2-2sin^2x<BR>\n" );
document.write( "2sin^2x+sinx-1=0<BR>\n" );
document.write( "(2sinx-1)(sinx+1)<BR>\n" );
document.write( "2sinx-1=0<BR>\n" );
document.write( "sinx=1/2<BR>\n" );
document.write( "x=&#960;/6, 5&#960;/6 (in quadrants I and II where sin>0) </SPAN>\n" );
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