A. The water will go down 2 inches
B. The water will go down 4.5 inches
C Half of the question is missing.
Alternate interior angles I believe
Sorry, I cannot answer this as this is a question I don't understand. You are pretty High-Tech BTW.
Answer:
Angle of elevation of the airplane = 17.46 degrees
Step-by-step explanation:
From the picture attached,
An airplane is flying at an altitude of 1500 ft at point A.
Runway starts from point B from which distance of the airplane is 5000 ft.
Now we apply sine rule in the given triangle ABC to measure the angle θ.
sinθ = 
sinθ = 
= 

degrees