Question

Consider two vectors A=3i - 1j and B = - i - 5j, how do you calculate `abs(A+B)`??

Answer 1

`|A+B|=sqrt40`

Explanation:

`Delta x=A_x+B_x=3-1=2`
`Delta y=A_y+B_y=-1-5=-6`
`|A+B|=sqrt(Delta x^2+Delta y^2)`
`|A+B|=sqrt(2^2+(-6)^2)`
`|A+B|=sqrt(4+36)`
`|A+B|=sqrt40`