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

Question

1406 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-12-13T20:30:43

The answer is $=sqrt34=5.8$

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

$〈-1,-2,4〉-〈2,-6,1〉=〈-3,4,3〉$

The modulus is

$∥〈-3,4,3〉∥=sqrt(9+16+9)=sqrt34=5.8$

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