Convert of the complex number in the polar form: `1-i`

Explanation

To convert the complex number \( z = 1 - i \) into polar form, we can follow these steps:

### Step 1: Identify the real and imaginary parts
The complex number \( z = 1 - i \) has:
- Real part \( a = 1 \)
- Imaginary part \( b = -1 \)

### Step 2: Calculate the modulus \( r \)
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