document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1134822>Question 1134822</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If tan(A+B) = 1/7 and tanA = 3, find without using tables, the value of tanB.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #752305 by </B><A HREF=/tutors/aboutme.mpl?userid=mathsolverplus><B>mathsolverplus(88)</B></A><img src=\"/images/stars/stars-08.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mathsolverplus><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=mathsolverplus><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=752305\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use the formula:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=tan%28a%2Bb%29+=+%28tan%28a%29%2Btan%28b%29%29%2F%281-tan%28a%29tan%28b%29%29 ALIGN=MIDDLE  ALT=\"tan%28a%2Bb%29+=+%28tan%28a%29%2Btan%28b%29%29%2F%281-tan%28a%29tan%28b%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=+%281%2F7%29+=+%283%2Btan%28b%29%29%2F%281-3tan%28b%29%29+ ALIGN=MIDDLE  ALT=\"+%281%2F7%29+=+%283%2Btan%28b%29%29%2F%281-3tan%28b%29%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Let tan(b) = x,\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F7+=+%283%2Bx%29%2F%281-3x%29 ALIGN=MIDDLE  ALT=\"1%2F7+=+%283%2Bx%29%2F%281-3x%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=1%2F7-3x%2F7+=+3%2Bx ALIGN=MIDDLE  ALT=\"1%2F7-3x%2F7+=+3%2Bx\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-10x%2F7=20%2F7 ALIGN=MIDDLE  ALT=\"-10x%2F7=20%2F7\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=-2 ALIGN=MIDDLE  ALT=\"x=-2\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Therefore, tan(b)=-2\r<BR>\n" );
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