In triangle ABC, since angle A is the right angle, we can determine that:
- AB (the side opposite angle C, or Θ) = 12
- CA (the side adjacent to angle C, or Θ) = 5
The tangent ratio of angle Θ (or C) is defined as the ratio of the length of the opposite side to the length of the adjacent side. Therefore, the tangent ratio can be calculated as follows:
\(\text{tan}(Θ) = \frac{\text{opposite}}{\text{adjacent}} = \frac{AB}{CA} = \frac{12}{5}\).
Thus, the answer is:
12/5