Question

What is the distance between `(-1,4,19)` and `(3,-5,-2)`?

Answer 1

`sqrt{4^2 + 9^2 + 21^2} = sqrt 538`

Explanation:

dist `(x,y) = sqrt{(Delta x)^2 + (Delta y)^2 + (Delta z)^2}`

where `Delta a =`dist `(a_1, a_2) = a_2 - a_1`