If `x=(2sintheta)/(1+costheta+sintheta)` , then prove that `(1-costheta+sintheta)/(1+sintheta)` is equal to `x` .

Explanation

To prove that \( \frac{1 - \cos \theta + \sin \theta}{1 + \sin \theta} = x \) where \( x = \frac{2 \sin \theta}{1 + \cos \theta + \sin \theta} \), we will start by manipulating the right-hand side expression.

### Step 1: Start with the expression for \( x \)
Given:
\[ x = \frac{2 \sin \theta}{1 + \cos \theta + \sin \theta} \]

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