Question

The value of is `hati.(hatj xx hatk)+hatj.(hatixxhatk)+hatk.(hatixxhatj)` is ______.

Options

• 0

• -1

• 1

• 3

Answer 1

The value of is `hati.(hatj xx hatk)+hatj.(hatixxhatk)+hatk.(hatixxhatj)` is 1.

Explanation:

`hati.(hatj xx hatk) + hatj.(hati xx hatk) + hatk.(hati xx hatj)` 

= `hati.hati + hatj(-hatj) + hatk.hatk`

= `1 - hatj.hatj + 1`

= 1 - 1 + 1

= 1

The correct answer is 1.