Question

What is `|| <-1, -2, 4 > - < 2, -6, 1 > ||`?

Answer 1

The answer is `=sqrt34=5.8`

Explanation:

Start by the subtraction of the 2 vectors before calculating the modulus.

`〈-1,-2,4〉-〈2,-6,1〉=〈-3,4,3〉`

The modulus is

`∥〈-3,4,3〉∥=sqrt(9+16+9)=sqrt34=5.8`