If A and B are two vectors such that |A+B|=2|A-B|. The angle between vectors A and B is

The vectors hat A and hat B are such that |hat A+hat B|=|hat A-hat B| .The angle between the two vectors is

If a,b,c are three mutally perpendicular vectors such that |a| = |b| = |c| then find the angle between vector a and (a + b + c) =

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?

The vectors vec A and vec B are such that |vec A + vec B | = |vec A - vec B| . The angle between the two vectors is

If sqrt(A^(2)+B^(2)) represents the magnitude of resultant of two vectors (A+ B) and (A - B),then the angle between two vectors is