<PRE><B>Question 266816</B>
When a 757 passenger jet begins its descent to the Ronald Regan International Airport in Washington, D.C, it is 3900 feet from the ground. Its angle of descent is 6 degrees. 
A.	What is the plane’s ground distance to the air port?
tan(6) = 3900/s
s = 3900/tan(6)
s = 37,106 feet
----------------
B.	How far must the plane fly to reach the runway?
sin(6) = 3900/hyp
hyp = 37,310 feet

</PRE>