Step-by-step explanation:

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Well the formula for a triangle is base(b) times height(h) divided by 2.
Answer:
A
Step-by-step explanation:
Answer:
Height of the light house 
Step-by-step explanation:
Distance of light house from boat = 100 ft
Angle of elevation from boat to the top of light house = 2°
Height above water while taking measurement = 4 ft
The figure of the situation is shown below.
For Δ ABC



Multiplying both sides by 100.


∴ 
Height of the light house 