The angle between the vector `2hati+hatj+hatk and hatj`?

Find the angle between the vector 2 hati+ 3hatj+ hatk and 2 hati - hatj- hatk .

Determine the sine of the angle between the vectors 3 hati +hatj +2hatk and 2hati - 2hatj +4hatk .

Find the angle between the vectors hati-2 hatj+3 hatk and 3 hati-2 hatj+hatk

Find the angle between the vectors 2hati+hatj-hatk and hati+2hatj+hatk using vector product.

Find the angle between the vector 2hati-3hatj+hatk and hati+hatj-2hatk .

Find the angle between the vectors 2hati-hatj+hatk and 3hati+4hatj-hatk .

Find the angle between the vectors hati-2hatj+3hatk and 3hati - 2hatj + hatk

Determine the angle between the vectors hati+2hatj+hatk and 3hati+hatj-hatk . Also find the unit vector perpendicular to each of the two vectors.