document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=438703>Question 438703</A>: <I><SPAN STYLE=\"word-break: break-all;\"> PA is tangent from P to circle O. PO = 10 and AO = 6. Find PA. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #303288 by </B><A HREF=/tutors/aboutme.mpl?userid=robertb><B>robertb(5830)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=robertb><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=robertb><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=303288\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28PO%29%5E2+=+%28PA%29%5E2+%2B+%28AO%29%5E2 ALIGN=MIDDLE  ALT=\"%28PO%29%5E2+=+%28PA%29%5E2+%2B+%28AO%29%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<==> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=100+=+%28PA%29%5E2+%2B+36 ALIGN=MIDDLE  ALT=\"100+=+%28PA%29%5E2+%2B+36\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<==> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=PA+=+sqrt%2864%29+=+8 ALIGN=MIDDLE  ALT=\"PA+=+sqrt%2864%29+=+8\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "Note that the radius vector is perpendicular to the tangent line PA, so we can use the Pythagorean theorem. </SPAN>\n" );
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