Answer:
12/5
Step-by-step explanation:
You want the tangent ratio for the marked angle in the given triangle.
Right triangle
We recognize a triangle with side lengths 5, 12, 13 is a right triangle. In a right triangle, the tangent ratio is ...
Tan = Opposite/Adjacent
The side opposite θ is 12; the side adjacent is 5. Their ratio is ...
tan(θ) = 12/5
