Draw the graph of `y=f(x)=sqrt(1-cosx)`

Explanation

To draw the graph of \( y = f(x) = \sqrt{1 - \cos x} \), we will follow these steps:

### Step 1: Rewrite the Function
We start with the function:
\[ y = \sqrt{1 - \cos x} \]
Using the trigonometric identity, we can express \( 1 - \cos x \) in terms of sine:
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