1. The problem is to understand the expression involving $\tan x$ and other symbols, but the input appears to be nonsensical or corrupted. 2. Since $\tan x$ is the tangent function, it is defined as $\tan x = \frac{\sin x}{\cos x}$ where $\cos x \neq 0$. 3. Without a clear mathematical question or expression, we cannot proceed with solving or simplifying. 4. Please provide a clear and valid mathematical expression or question involving $\tan x$ or any other function.