Question

Question 1

1 pts
(05.03 MC)
An observer (O) spots a plane flying at a 55° angle to his horizontal line of sight. If the
plane is flying at an altitude of 21,000 feet, what is the distance (x) from the plane (P) to
the observer (O)?
h = 21,000 ft

Answer 1

sin θ = 21000 / H where observer sees plane flying at 55 deg

H = 21000 / sin 55 = 21000 / .82 = 25600 ft