document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=43767>Question 43767</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the coordinates of the foci of the hyperbola: x^2/16 - y^2/4 = 1 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #28729 by </B><A HREF=/tutors/aboutme.mpl?userid=Nate><B>Nate(3500)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Nate><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=28729\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x^2/16 - y^2/4 = 1<BR>\n" );
document.write( "Transverse Axis: horizontal<BR>\n" );
document.write( "Center: (0,0)<BR>\n" );
document.write( "a = 4<BR>\n" );
document.write( "b = 2<BR>\n" );
document.write( "c^2 = a^2 + b^2<BR>\n" );
document.write( "c = sqrt(16 + 4)<BR>\n" );
document.write( "c = sqrt(20) = 2*sqrt(5)<BR>\n" );
document.write( "Vertices: (-4,0) and (4,0)<BR>\n" );
document.write( "Foci: (-2*sqrt(5),0) and (2*sqrt(5),0)<BR>\n" );
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document.write( "</TD></TR></TABLE>\n" );