Find the domain and range of the following `f(x)=1/sqrt(1-cosx)`

Explanation

To find the domain and range of the function \( f(x) = \frac{1}{\sqrt{1 - \cos x}} \), we will follow these steps:

### Step 1: Determine the Domain

1. **Identify Restrictions**: The function is in the form \( \frac{P}{Q} \), where \( Q = \sqrt{1 - \cos x} \). For the function to be defined, \( Q \) must not be equal to zero. Therefore, we need to find when \( 1 - \cos x = 0 \).

2. **Solve for \( x \)**:
\[
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