If `f:(-pi/2,pi/2)->R` and `g:[-1,1]->R` be defined as `f(x)=tanx` and `g(x)=sqrt(1-x^2)` respectively. Describe `fog ` and `gof`

Explanation

To find the compositions \( f \circ g \) and \( g \circ f \), we will follow these steps:

### Step 1: Define the functions
We have two functions defined as follows:
- \( f(x) = \tan(x) \) for \( x \in \left(-\frac{\pi}{2}, \frac{\pi}{2}\right) \)
- \( g(x) = \sqrt{1 - x^2} \) for \( x \in [-1, 1] \)

### Step 2: Find \( f \circ g \)
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