What is the dot product of $<3,5,-3 >$ and $<-3,6,3 >$ ?

Question

1532 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2016-03-19T15:25:02

$"see animation"$
$A.B=12$

enter image source here

$A=<3,5,-3>" "B= <-3,6,3>$
$A.B=3*(-3)+5*6+(-3)*3$
$A.B=-9+30-9$
$A.B=30-18$
$A.B=12$

What is the dot product of <3,5,-3 ><3,5,-3 > and <-3,6,3 ><-3,6,3 >?