document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1025242>Question 1025242</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use the double angle identity to find sin(2x) if csc= -square root 19 and cosx>0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #640750 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=640750\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use the double angle identity to find sin(2x) if csc= -square root 19 and cosx>0<BR>\n" );
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document.write( "sin = 1/csc = -1/sqrt(19)<BR>\n" );
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document.write( "cos = sqrt(1 - sin^2) = sqrt(18)/sqrt(19)\r<BR>\n" );
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document.write( "sin(2x) = 2sin(x)cos(x)<BR>\n" );
document.write( "= 2*(-1)*sqrt(18)/19<BR>\n" );
document.write( "= -6sqrt(2)/19\r<BR>\n" );
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