Projection of `hati+2hatj+3hatk` on `hati-2hatj-2hatk` is

A

3

B

`-3`

C

9

D

`-9`

Verified by Experts

The correct Answer is:

B

Similar Questions

Explore conceptually related problems

The projection of veca=3hati-hatj+5hatk on vecb=2hati+3hatj+hatk is

A unit vector perpendicular to the two vectors hati + 2hatj - hatk and 2hati + 3hatj + hatk is equal to

The area of a parallelogram whose adjacent sides are hati - 2 hatj+ 3 hatk and 2 hati + hatj - 4 hatk is :

Find the unit vector parallel to the resultant vector of 2hati+4hatj-5hatk and hati+2hatj+3hatk .

Unit vector perpendicular to hati - 2 hatj + 2hatk and lying in the plance containing hati + hatj + 2 hatk and -hati + 2 hatj + hatk is :

A vector perpendicular to both the vectors (2hati+3hatj+hatk) and (hati-hatj+2hatk) is

A unit vector perpendicular to both hati+hatj+hatk and 2hati+hatj+3hatk is

A unit vector perpendicular to the plane containing the vectors hati+2hatj+hatk and -2hati+hatj+3hatk is