document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1055399>Question 1055399</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( "tan u = 5/3,    0 < u < &#960;/2 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #670662 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=670662\">put this solution on YOUR website!</A><BR><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( "tan u = 5/3,    0 < u < &#960;/2<BR>\n" );
document.write( "-------------<BR>\n" );
document.write( "tan(u) = y/x<BR>\n" );
document.write( "r = sqrt(x^2 + y^2) = sqrt(34)<BR>\n" );
document.write( "---<BR>\n" );
document.write( "sin(u) = y/r = 5sqrt(34)/34<BR>\n" );
document.write( "cos(u) = x/r = 3sqrt(34)/34<BR>\n" );
document.write( "---<BR>\n" );
document.write( "sin(2u) = 2sin(u)*cos(u)<BR>\n" );
document.write( "cos(2u) = sqrt(1 - sin^2(2u))<BR>\n" );
document.write( "tan(2u) = sin(2u)/cos(2u)<BR>\n" );
document.write( "---<BR>\n" );
document.write( "In Q2, <BR>\n" );
document.write( "sin is +<BR>\n" );
document.write( "cos is -<BR>\n" );
document.write( "tan is - </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );