How do you find the inner product and state whether the vectors are perpendicular given #<8,6>*<-2,-3>#?

1 Answer
Narad T.
Dec 20, 2016

The answer is #=-34#

Explanation:

The inner or dot product of 2 vectors is

veca.vecb=〈a,b〉.〈c,d〉=(ac+bd)#

If the dot product #=0#, then, the vectors are perpendicular

The dot product is

#=〈8,6〉.〈-2,-3〉=(-16-18)=-34#

The vectors are not perpendicular

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