document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=298029>Question 298029</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the exact values of sin(2u), cos(2u), and tan(2u) using the double-angle formulas. <BR>\n" );
document.write( "cot(u) = -5,  3&#960;  <BR>\n" );
document.write( "2  < u < 2&#960;  <BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #214508 by </B><A HREF=/tutors/aboutme.mpl?userid=nyc_function><B>nyc_function(2741)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nyc_function><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=nyc_function><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=214508\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Here are the double angle formulas:\r<BR>\n" );
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document.write( "cos 2u = 2cos^2 u &#8722; 1\r<BR>\n" );
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document.write( "sin2u = 2sinucosu\r<BR>\n" );
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document.write( "tan2u = (2tanu)/(1 - tan^2 u)\r<BR>\n" );
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document.write( "The value of u lies between 2pi and 2.  \r<BR>\n" );
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document.write( "I'm sure you can do it now.\r<BR>\n" );
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