What is the dot product of <5,2,8> and <1,6,2>?

1 Answer
Aug 22, 2017

The answer is =33

Explanation:

The dot product of 2 vectors, a=<x1,x2,x3> and b=<y1,y2,y3> is

a.b=<x1,x2,x3>.<y1,y2,y3>

=x1y1+x2y2+x3y3

Therefore,

<5,2,8>.<1,6,2>=(51)+(26)+(82)

=5+12+16=33