# Vector 7

Given vector OA(12,16) and vector OB(4,1). Find vector AB and vector |A|.

Correct result:

x =  -8
y =  -15
A =  17

#### Solution:

$x=4-12=-8$
$y=1-16=-15$
$A=\sqrt{{x}^{2}+{y}^{2}}=\sqrt{\left(-8{\right)}^{2}+\left(-15{\right)}^{2}}=17$

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Tips to related online calculators
Two vectors given by its magnitudes and by included angle can be added by our vector sum calculator.
Pythagorean theorem is the base for the right triangle calculator.

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