Posted by tim on Wednesday, March 10, 2010 at 2:18pm.
A plane is flying at an elevation of 30000 feet.
It is within sight of the airport and the pilot finds that the angle of depression to the airport is 18.
Find the distance between the plane and the airport.
Find the distance between a point on the ground directly below the plane and the airport.

trig  bobpursley, Wednesday, March 10, 2010 at 2:29pm
Isn't 30,000/slantdistance=sin18?

trig  tim, Wednesday, March 10, 2010 at 2:39pm
huh?

trig  jc, Monday, February 25, 2013 at 8:32pm
b=a(tanB)
where a is your altitude, B is your angle of depression and b is your distance to airport.
b=30,000(tan(72))
b=92,330.51
Answer This Question
Related Questions
 trig  a plane is 50000 ft in the air and 30000 ft from an airport find the ...
 PreCalculusTrig  A pilot in a plane at an altitude of 22,000 feet observes ...
 Math  A plane is flying at an altitude of 12,000 feet and is preparing to land ...
 Trigonometry  AN AIRPLANE IS FLYING AT A HEIGHT OF 1000 m. THE ANGLE OF ...
 pre cal  an airplane is flying at an altitude of 2500 feet parallel to the ...
 math  A plane flying at 200 knots left an airport A( 30° S, 31°E) and flew due ...
 Trig  A pilot is flying over a straight highway. He determines the angles of ...
 geometry  A plane is flying at an altitude of 12,000 m. From the pilot, the ...
 trig  A plane is flying 12,000 feet horizontally from a tall, vertical cliff. ...
 math  A plane is 11.9 miles off the ground as it makes its descent to land at ...
More Related Questions