The length of Eunice wooden ramp is 8.77 feet.
Trigonometric ratios is used to show the relationship between the sides and angles of a right angled triangle.
The ramp has the shape of a right angled triangle. Let l represent the length of the ramp, using trigonometric ratios:
sin(20) = 3 / l
l = 8.77 feet
The length of Eunice wooden ramp is 8.77 feet.
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