Question

What angle, to the nearest degree, does the wooden plank form with the ground?

Answer 1

Answer:

29 degrees to nearest degree.

Step-by-step explanation:

This is the angle whose tangent is  10/18 or 5/9.

this = 29 degrees

Answer 2

29°

Consider the right triangle between the plank and the ground

the angle can be found using tangent ratio

tanx° = $\frac{opposite}{adjacent}$

where adjacent = 18 and opposite = 10

tanx° = $\frac{10}{18}$

x = $tan^{-1}$($\frac{10}{18}$) = 29.0546 ≈ 29°