for this case it is to use the following trigonometric definition.
Tan (x) = a / b
Where,
a: opposite side of the triangle.
b: adjacent side of the triangle.
Substituting:
Tan (x) = a / b
Tan (x) = 24/10
Tan (x) = 12/5
Answer:
Tan (x) = 12/5 (option 3)