If `a=hati-hatj-hatk and b= lambda hati-3hatj+ hatk` and the orthogonal
Channel: Doubtnut
Date: 2020-05-17

If `a=hati-hatj-hatk and b= lambda hati-3hatj+ hatk` and the orthogonal projection of b on a is `(4)/(3) (hati-hatj-hatk)` then `lambda` is equal to