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

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Answer 1 · 2016-03-12T20:56:29

$|A+B|=sqrt40$

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

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