Question

What is the distance between `(0 , (-13 pi)/8 )` and `(9, pi )`?

Answer 1

`color(green)(9)`

Explanation:

(Assuming the given coordinates are in Polar form)

`(0,(-13pi)/8)` is a point at the origin (the angle of rotation is irrelevant if the radius is `0`).

`(9,pi)` is a point at a distance of `9` from the origin.

The distance between the origin [at `(0,(-13pi)/8)`]
and a point `9` units from the origin [at `(9,pi)`]

`color(white)("XXX")`is `9`