document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=258923>Question 258923</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An airbus A320 aircraft is cruising at an altitude of 10000 m. The aircraft is flying in a straight line away from Rachel, who is standing on the ground. If she sees the angle of elevation of the aircraft change from 70 degrees to 33 degrees in one minute, what is its cruising speed, to the nearest kilometer per hour? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #190660 by </B><A HREF=/tutors/aboutme.mpl?userid=Greenfinch><B>Greenfinch(383)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Greenfinch><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=Greenfinch><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=190660\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Initial position = 10000 cos 70 = 3420.2 metres<BR>\n" );
document.write( "Final position = 10000 cos 33 = 8386.7 metres<BR>\n" );
document.write( "Difference = 4966.5 metres in one minute<BR>\n" );
document.write( "so in 1 hour  60 times 4966.5 metres /hr = 297.99 kmetres / hr<BR>\n" );
document.write( "Say 298 km/hr </SPAN>\n" );
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