[" 4.What is the angle between "(vec a+vec b)" and "],[(vec a-bar(b))?]

What is the angle between (vec A+ vec B) and (vec A xx vec B) ?

If vec a and vec b are unit vectors find the angle between vec a+vec b and vec a-vec b

If vec a and vec b are unit Vectors,then what is the angle between vec a and vec b so that sqrt(2)vec a-vec b is a unit vector?

If vec a and vec b are unit Vectors, then what is the angle between vec a and vec b so that sqrt(2) vec a- vec b is a unit vector?

Let vec(a), vec(b) and vec(c) be three vectors such that vec(a) + vec(b) + vec(c) = 0 and |vec(a)|=10, |vec(b)|=6 and |vec(c) |=14 . What is the angle between vec(a) and vec(b) ?

The angle between vec(A) + vec(B) and vec(A) xx vec(B) is

If vec a = i +j and vec b = j-k then the angle between vec a + vec b and vec a - vec b is

If |vec a+vec b|=|vec a-vec b| .Prove that the angle between vec a and vec b is 90^(@) ?