Jenny is standing 400 feet from an 800 foot tall building. Jenny walks away from the building to a point where the angle of elevation to the top of the building is 22°. What is the angle of elevation to the top of the building from Jenny’s original position, and how far away from the building did she move?

1 answer

At 22°, her distance x from the building can be found by
800/x = tan 22°
Her original angle of elevation θ comes from
tanθ = 800/400