document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1137918>Question 1137918</A>: <I><SPAN STYLE=\"word-break: break-all;\"> prove that:  tan(39°)tan(3°)=tan(15°)tan(9°) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #755844 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=755844\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=tan%2839%29tan%283%29=tan%2815%29tan%289%29+ ALIGN=MIDDLE  ALT=\"tan%2839%29tan%283%29=tan%2815%29tan%289%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >°\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.809784033195%2A0.052407779283=0.2679491924311227%2A0.15838444+ ALIGN=MIDDLE  ALT=\"0.809784033195%2A0.052407779283=0.2679491924311227%2A0.15838444+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.04243898=0.04243898+ ALIGN=MIDDLE  ALT=\"0.04243898=0.04243898+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "The left side <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0.04243898 ALIGN=MIDDLE  ALT=\"0.04243898\"   DISABLED_style= \"max-width:90%; height:auto;\" > is equal to the right side<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+0.04243898 ALIGN=MIDDLE  ALT=\"+0.04243898\"   DISABLED_style= \"max-width:90%; height:auto;\" >, which means that the given statement is always <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=true ALIGN=MIDDLE  ALT=\"true\"   DISABLED_style= \"max-width:90%; height:auto;\" >.\r<BR>\n" );
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document.write( "answer: proven to be <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=true ALIGN=MIDDLE  ALT=\"true\"   DISABLED_style= \"max-width:90%; height:auto;\" > </SPAN>\n" );
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