If vector `(hata+ 2hatb)` is perpendicular to vector `(5hata-4hatb)`, then find the angle between `hata and hatb`.

If hata.hatb=1/2 then what is the angle between hata and hatb ?

If |hata+hatb|=|hata-hatb| , then find the angle between veca and vecb

If |hata+hatb|=|hata-hatb| , then find the angle between veca and vecb

If |hata+hatb|=|hata-hatb| , then find the angle between veca and vecb

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

Let veca and vecb be two unit vectors if the vectors vec c=hata +hat2b and vecd=5 hata -4hatb are perpendicular to each other then the angle between hata and hatb is