Ch03

& & & & 33. From the definition of the dot product between A and B , A ⋅ B = AB cos θ , we have

& & A⋅ B cos θ = AB & & With A = 6.00 , B = 7.00 and A ⋅ B = 14.0 , cos θ = 0.333 , or θ = 70.5 ° .