Answer:
The measure of the angle = 43.36°
Explanation:
It is required the angle of the question mark, let it = x
So, we have a right triangle.
The opposite of the angle x = 17
And, the adjacent of the angle x = 18
We should know that:
tan x = opposite / adjacent
So, tan x = 17/18
∴ x = tan⁻¹(17/18) ≈ 43.36°
So, The measure of the angle = 43.36°