document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=864960>Question 864960</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I previously asked this question and got this solution (after question). But I would appreciate further clarification.<BR>\n" );
document.write( "The line with the equation y=mx is tangent to the circle with centre (-8,0) and radius 4 at the point P(x,y). <BR>\n" );
document.write( "a)find x coordinate of P in terms of m <BR>\n" );
document.write( "b)Show that m = +- sqrt (3)/ 3 and hence find the coordinates of P<BR>\n" );
document.write( "(x+8)^2+y^2=16<BR>\n" );
document.write( "(x+8)^2+y^2=16, y=mx<BR>\n" );
document.write( "m = 1/sqrt(3),   x = -6,   y = m x<BR>\n" );
document.write( "m =-1/sqrt(3),   x = -6,   y = m x<BR>\n" );
document.write( "+-1/sqrt(3)=+-sqrt(3)x/3<BR>\n" );
document.write( "y=+-sqrt(3)x/3<BR>\n" );
document.write( "x=-6,   y =2sqrt(3)<BR>\n" );
document.write( "P=(-6,2sqrt(3))<BR>\n" );
document.write( "Can you please provide further clarification- <BR>\n" );
document.write( "Step 3 and 4-<BR>\n" );
document.write( "m = 1/sqrt(3), x = -6, y = m x <BR>\n" );
document.write( "m =-1/sqrt(3), x = -6, y = m x <BR>\n" );
document.write( "How was the x coordinate found. <BR>\n" );
document.write( "Step 5 <BR>\n" );
document.write( "+-1/sqrt(3)=+-sqrt(3)x/3 <BR>\n" );
document.write( "what is happening here for one to become the other.\r<BR>\n" );
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document.write( "I need this explained very simply So i i can understand it. Especially my queries about the steps. Thank you very much.\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #521429 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39620)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=521429\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I just did this for you last night.  Did you not understand my explanation?\r<BR>\n" );
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