`sintheta+costheta=sqrt(2)`

Explanation

To solve the equation \( \sin \theta + \cos \theta = \sqrt{2} \), we can follow these steps:

### Step 1: Multiply both sides by \( \sqrt{2} \)
We start with the equation:
\[ \sin \theta + \cos \theta = \sqrt{2} \]
Multiplying both sides by \( \sqrt{2} \):
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