document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1066665>Question 1066665</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Mary needs to row her boat across a 120 m -wide river that is flowing to the east at a speed of 1.3 m/s . Mary can row with a speed of 3.9 m/s .<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #681877 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39627)</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=681877\">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=tan%28theta%29=1.3%2F3.9=1%2F3 ALIGN=MIDDLE  ALT=\"tan%28theta%29=1.3%2F3.9=1%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "This angle <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=theta ALIGN=MIDDLE  ALT=\"theta\"   DISABLED_style= \"max-width:90%; height:auto;\" >, is 33.7 degrees, the angle from starting point, between the point directly accross the river and the point to the EAST accross the river.  This ASSUMES Mary directs her boat at the given speed accross the current with its given speed.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "r, actual speed in the found 33.7 degree direction<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=cos%2833.7%29=3.9%2Fr ALIGN=MIDDLE  ALT=\"cos%2833.7%29=3.9%2Fr\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r=3.9%2Fcos%2833.7%29 ALIGN=MIDDLE  ALT=\"r=3.9%2Fcos%2833.7%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=r=3.9%2F0.83195 ALIGN=MIDDLE  ALT=\"r=3.9%2F0.83195\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28r=4.68%29 ALIGN=MIDDLE  ALT=\"highlight_green%28r=4.68%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, meters per second\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Where on the other side of the river, but TO THE EAST, will Mary arrive?<BR>\n" );
document.write( "Now, the right triangle is legs x and 120 meter, and theta 33.7 degree.  The right angle is between the legs x and 120.\r<BR>\n" );
document.write( "\n" );
document.write( "-<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x%2F120=tan%2833.7%29 ALIGN=MIDDLE  ALT=\"x%2F120=tan%2833.7%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=120%2Atan%2833.7%29 ALIGN=MIDDLE  ALT=\"x=120%2Atan%2833.7%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=highlight_green%28x=80%29 ALIGN=MIDDLE  ALT=\"highlight_green%28x=80%29\"   DISABLED_style= \"max-width:90%; height:auto;\" >, meters to the east of the point directly accross the river from where she began.\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "--not completed-- </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );