document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=196607>Question 196607</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is the double angle formula derived from the sine and cosine subtraction formulas? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #147563 by </B><A HREF=/tutors/aboutme.mpl?userid=Mathtut><B>Mathtut(3670)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Mathtut><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=147563\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> sin2t=2sintcost<BR>\n" );
document.write( "cos2t=cos^2(t) -sin^2(t) </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );