Respuesta :
Answer: 129.81 m, roughly 130 m
Step-by-step explanation: Let me know if you need an explanation.
Answer:
Applying the alternative interior pair of angles theorem => B = 31 deg
Applying the trigonometry property of tangent, the distance from the cliff to the boat is calculated by:
D = 78/tan(B) = 78/tan(31) =~129.81
Hope this helps!
:)