If `vec a` and `vec b` are two unit vectors and the angle between them is `60^@` then `((1+vec a.vec b))/((1-vec a.vec b))` is

If vec a and vec b are unit vectors and 60^(@) is the angle between them,then (2vec a-3vec b)*(4vec a+vec b) equals

If vec a and vec b are unit vectors,and theta is the angle between them,then |vec a-vec b|=

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

(vec a.vec b)vec c

Let vec(a) and vec(b) be two unit vectors and theta is the angle between them. Then vec(a)+vec(b) is a unit vector if :

Let vec a and vec b be two vectors of the same magnitude such that the angle between then is 60^(0) and vec avec b=8. Find |vec a| and |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?

vec a and vec b are unit vectors and vec a+2vec b is perpendicular to 5vec a-4vec b ,then 2(vec a.vec b) is equal to

Let vec(a) and vec(b) be two unit vectors and α be the angle between them. If (vec(a) + vec(b)) is also the unit vectors, then what is the value of α ?

If vec a and vec b are two vectors such that |vec a xxvec b|=2, then find the value of [vec avec bvec a xxvec b]