Question

if the magnitude of vector A.B=1/2 AB then an angle between vector A and B is​?
(solved with explain )​

Answer 1

the dot product is a scaler product between two vectors

i.e A.B= A× B × cosx

therefore in this equation cos x = 1/2

i.e x = 60°

Answer 2

Answer:

θ=60°

Explanation:

given:

A.B=1/2AB

ABcosθ=1/2AB

cosθ=1/2

θ=cos-1 1/2

θ=60°