document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=890958>Question 890958</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am standing at the shore. One mile east there is a point, also on the shore. One mile offshore and north from that point there is a boat in the water. It is moving westerly and parallel to the shore at 25 mph. At what speed is it approaching me? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #539422 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=539422\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> I am standing at the shore. One mile east there is a point, also on the shore. One mile offshore and north from that point there is a boat in the water. It is moving westerly and parallel to the shore at 25 mph. At what speed is it approaching me?<BR>\n" );
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document.write( "a = distance of boat from shore = 1<BR>\n" );
document.write( "b = distance of point from you = 1<BR>\n" );
document.write( "s = distance from you to the boat.<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=s%5E2+=+a%5E2+%2B+b%5E2+=+b%5E2+%2B+1 ALIGN=MIDDLE  ALT=\"s%5E2+=+a%5E2+%2B+b%5E2+=+b%5E2+%2B+1\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=s+=+sqrt%28b%5E2%2B1%29 ALIGN=MIDDLE  ALT=\"s+=+sqrt%28b%5E2%2B1%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "ds/dt = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%281%2F2%29%2A%28b%5E2%2B1%29%5E%28-1%2F2%29%2A2 ALIGN=MIDDLE  ALT=\"%281%2F2%29%2A%28b%5E2%2B1%29%5E%28-1%2F2%29%2A2\"   DISABLED_style= \"max-width:90%; height:auto;\" >* db/dt<BR>\n" );
document.write( "ds/dt = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=25%2Fsqrt%282%29+=+12.5sqrt%282%29 ALIGN=MIDDLE  ALT=\"25%2Fsqrt%282%29+=+12.5sqrt%282%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "=~ 17.68 mi/hr </SPAN>\n" );
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