document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=734963>Question 734963</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A plane is approaching an airport from the northwest, while a helicopter is moving directly east away from the airport. At the moment the plane is 15 mi northwest of the airport  and the helicopter is 20 mi to the east. the plane is moving 600 mph and yhe helicopter is traveling at 100 mph. what is the rate of change of the distance between the two aircraft. round your answer to the nearest tenth.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #449217 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=449217\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A plane is approaching an airport from the northwest, while a helicopter is moving directly east away from the airport. At the moment the plane is 15 mi northwest of the airport  and the helicopter is 20 mi to the east. the plane is moving 600 mph and yhe helicopter is traveling at 100 mph. what is the rate of change of the distance between the two aircraft. round your answer to the nearest tenth. <BR>\n" );
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document.write( "It's an obtuse triangle with sides of 600 and 100, and the included angle = 135 degs.<BR>\n" );
document.write( "The relative speed of the 2 aircraft is the 3rd side.<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=c%5E2+=+a%5E2+%2B+b%5E2+-+2ab%2Acos%28135%29+=+600%5E2+%2B+100%5E2+-+2%2A600%2A100%2A%28-0.70711%29 ALIGN=MIDDLE   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "=~ 674.4 mi/hr<BR>\n" );
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