Find a ⋅ b. a = <7, 4>, b = <3, 5>

Answer 1

a =<7,4>  b =<3,5>

a ⋅ b is a scaler product

if a =<x1,y1>   b= <x2,y2>

a ⋅ b =x1x2+y1y2

a ⋅ b =(7)(3)+(4)(5)

       =21+20

       =41