Final answer:
The value of x equals tan⁻¹(3.2/5.12) in triangle A.
Step-by-step explanation:
To determine in which triangle the value of x is equal to tan⁻¹(3.2/5.12), we need to consider the trigonometric functions in a right triangle. In this case, x is the adjacent side and y is the opposite side. The value of x equals tan⁻¹(3.2/5.12) in triangle A.