Find the smallest positive root of the equation `sqrt(sin(1-x))=sqrt(cos"x")`

Explanation

To solve the equation \( \sqrt{\sin(1-x)} = \sqrt{\cos x} \), we will follow these steps:

### Step 1: Square both sides
We start by squaring both sides of the equation to eliminate the square roots:
\[ \sin(1-x) = \cos x \]

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