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=412=8x=4-12=-8
y=116=15y=1-16=-15
A=x2+y2=(8)2+(15)2=17A=\sqrt{ x^2+y^2 }=\sqrt{ (-8)^2+(-15)^2 }=17



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