Question

write formula for dot product​

Answer 1

Answer:

|A||B|costheta....this is the formula

Answer 2

Answer:

Given these properties and the fact that the dot product is commutative, we can expand the dot product a⋅b in terms of components, a⋅b=(a1i+a2j+a3k)⋅(b1i+b2j+b3k)=a1b1i⋅i+a2b2j⋅j+a3b3k⋅k+(a1b2+a2b1)i⋅j+(a1b3+a3b1)i⋅k+(a2b3+a3b2)j⋅k.