A train is traveling up slight grade with an angle of inclination of only 2 degrees. After traveling 1 mile, what is the vertical change in feet?
tan 2° = x / 1 mile, where x is the vertical change
0.03492 = x / 1 mile
x = 1 mile · 0.03429 = 0.03492 miles
1 mile = 5,280 feet
0.03492 · 5,280 = 184.38 ft
Answer: The vertical change is 184.38 feet
The vertical change is 184.38 feet.
The rise between two points is known as the vertical change.
let x be the vertical change
tan 2° = \(\frac{x}{1miles }\)
\(x = tan 2\)°\(* 1 mile\)
we know tan 2° = 0.034921
Thus, x = 0.034921 miles
Since 1 mile = 5,280 feet
0.034921 miles = 0.034921 * 5,280 = 184.38 feet
vertical change is 184.38 feet.
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