Answer: 27 ft
Step-by-step explanation:
Given
the angle of elevation is [tex]\theta =4^{\circ}[/tex]
Length of track is [tex]L=387\ ft[/tex]
Vertical rise is given by
[tex]\Rightarrow \sin (4^{\circ})=\dfrac{H}{387}\\\\\Rightarrow H=387\sin (4^{\circ})=26.99\approx 27\ ft[/tex]
