Let `veca = 2 hat i - hatj + hatk` and `vec b = hat i - 2 hat j + hat k`,
(i) Find the projection of `vec a` on `vec b`.
(ii) Find theprojection vector of `vec a on vecb`

Answer

(i)` (5)/(sqrt6)`
(ii) `(5)/(6)(hat i + 2 hat j + hat k)`