document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1101594>Question 1101594</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use double-angle or half-angle identity to simplify\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%282-csc%5E2%28x%29%29%2F%28csc%5E2%28x%29%29+ ALIGN=MIDDLE  ALT=\"+%282-csc%5E2%28x%29%29%2F%28csc%5E2%28x%29%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Thanks </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #716205 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=716205\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> This is 2/csc^2 x)-1<BR>\n" );
document.write( "That is 2 sin2^x-1<BR>\n" );
document.write( "That is -(1-2 sin^2 x)<BR>\n" );
document.write( "that is -cos (2x) ANSWER<BR>\n" );
document.write( "check<BR>\n" );
document.write( "let x=30 degrees<BR>\n" );
document.write( "csc 30 is 2<BR>\n" );
document.write( "(2-4)/4=-1/2<BR>\n" );
document.write( "-cos (60)=-1/2<BR>\n" );
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