If `hata` and `hatb` are two unit vectors, then the vector `(hata + hatb) xx (hata xx hatb)` is parallel to

If hata and hatb are unit vectors then the vector defined as vecV=(hata xx hatb) xx (hata+hatb) is collinear to the vector :

If hata and hatb are unit vectors then the vector defined as vecV=(hata xx hatb) xx (hata+hatb) is collinear to the vector :

If hata and hatb are two unit vectors inclined at an angle theta , then the value of |hata-hatb| is -

Let hata and hatb be two unit vectors. If the vectors vecc=hata+2hatb and vecd=5hata-4hatb are perpendicular to each other then the angle between hata and hatb is (A) pi/2 (B) pi/3 (C) pi/4 (D) pi/6

Let hata and hatb be two unit vectors. If the vectors vecc=hata+2hatb and vecd=5hata-4hatb are perpendicular to each other then the angle between hata and hatb is (A) pi/2 (B) pi/3 (C) pi/4 (D) pi/6

Let hata and hatb be two unit vectors. If the vectors vecc=hata+2hatb and vecd=5hata-4hatb are perpendicular to each other then the angle between hata and hatb is (A) pi/2 (B) pi/3 (C) pi/4 (D) pi/6