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What is the dot product of $<-8,1,2 >$ and $<-2,-8,-1 >$ ?

1 Answer

Mar 7, 2016

$a.b=6$

Explanation:

enter image source here
$vec a=<-8,1,2>" "vec b=<-2,-8,-1>$
$a.b=16-8-2$
$a.b=6$

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