An observer (O) is located 900 feet from a building (B). The observer notices a helicopter (H) flying at a 49° angle of elevation from his line
of sight. How high is the helicopter flying over the building? You must
show all work and calculations to receive full credit.
H
h
49°
B
900 feet

i believe the answer is letter c) 8

step-by-step explanation:

can you make your screen more see able?

then i might be able to .

step-by-step explanation:

we have

using a graphing tool

see the attached figure

this is a quadratic equation (vertical parabola) open up

the vertex is a > vertex

the domain of the function is all real > interval (-∞,∞)

the range of the function is the > [-6.125,∞)

the function has two x->   and

the function is increasing over the > (0.25,∞)

the function is decreasing over the > (-∞,0.25)