Find the distance between the points `P(2,pi/2)` and `Q(3,pi/4)` which are in polar form.

Explanation

To find the distance between the points \( P(2, \frac{\pi}{2}) \) and \( Q(3, \frac{\pi}{4}) \) in polar coordinates, we will follow these steps:

### Step 1: Convert Polar Coordinates to Cartesian Coordinates
The polar coordinates \( (r, \theta) \) can be converted to Cartesian coordinates \( (x, y) \) using the formulas:
\[ x = r \cos(\theta) \]
\[
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