Question

Write two different vectors having same direction.

Answer 1

Let `veca = hati + hatj + hatk`   and   `vecb = 2hati + 2hatj + 2hatk`

Direction cosines of `veca < 1/sqrt3, 1/sqrt3, 1/sqrt3 >`

Direction cosines of 

`vecb < 2/sqrt12, 2/sqrt12, 2/sqrt12 >`

Hence `veca ne vecb  "but"  vec b` have same direction.