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

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Answer 1 · 2016-12-20T14:28:20

The answer is $=-34$

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

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