document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=832693>Question 832693</A>: <I><SPAN STYLE=\"word-break: break-all;\"> please help me solve this question: Given that tan (x+y)=3 and tan (x-y)=1, find the exact value of tan 2y. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #502307 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=502307\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Given that tan (x+y)=3 and tan (x-y)=1, find the exact value of tan 2y.<BR>\n" );
document.write( "***<BR>\n" );
document.write( "tan (x+y)=3<BR>\n" );
document.write( "tan (x-y)=1<BR>\n" );
document.write( "..<BR>\n" );
document.write( "let(x+y)=u<BR>\n" );
document.write( "let(x-y)=v<BR>\n" );
document.write( "..<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=tan%28u-v%29=%28tan%28u%29-tan%28v%29%29%2F%281%2Btan%28u%29tan%28v%29%29 ALIGN=MIDDLE  ALT=\"tan%28u-v%29=%28tan%28u%29-tan%28v%29%29%2F%281%2Btan%28u%29tan%28v%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=tan%28x%2By-x%2By%29=%28tan%28x%2By%29-tan%28x-y%29%29%2F%281%2Btan%28x%2By%29tan%28x-y%29%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=tan%282y%29=%283-1%29%2F%281%2B%283%2A1%29%29=2%2F4 ALIGN=MIDDLE  ALT=\"tan%282y%29=%283-1%29%2F%281%2B%283%2A1%29%29=2%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=tan%282y%29=1%2F2 ALIGN=MIDDLE  ALT=\"tan%282y%29=1%2F2\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );