If `tantheta+sectheta=e^x` then `costheta` equals

Explanation

To solve the problem where \( \tan \theta + \sec \theta = e^x \) and we need to find \( \cos \theta \), we can follow these steps:

### Step 1: Write down the given equation
We start with the equation:
\[ \tan \theta + \sec \theta = e^x \]

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