The lines `vecr= (hati +hatj+hatk)alpha +3hatk` and `vecr= (hati -2hatj +hatk)beta +3hatk`

The line vecr=alpha(hati+hatj+hatk)+3hatk and vecr=beta(hati-2hatj+hatk)+3hatk (A) intersect at rilghat angles (B) are skew (C) are parallel (D) none of these

The line vecr=alpha(hati+hatj+hatk)+3hatk and vecr=beta(hati-2hatj+hatk)+3hatk (A) intersect at rilghat angles (B) are skew (C) are parallel (D) none of these

The shortest distance between the lines vecr = (2hati - hatj) + lambda(2hati + hatj - 3hatk) vecr = (hati - hatj + 2hatk) + lambda(2hati + hatj - 5hatk)

Determine whether the lines vecr=(hati-hatj)+t(hati-hatj+3hatk) and vecr=(2hati+hatj-hatk)+s(hati+2hatj-hatk) are parallel. Find the shortest distance between them.

Find the shortest distance between the lines vecr = (hati + 2hatj+hatk) + lambda(hati-hatj+hatk) and vecr = 2hati - hatj-hatk + mu(2hati+hatj+2hatk)

Find the shortest distance between the lines vecr = hati+hatj+lambda(2hati-hatj+hatk) and vecr = (2 hati+hatj-hatk) + mu (3hati-5hatj + 2hatk)

The shortest distance between the lines vecr=(hati-hatj)+lamda(hati+2hatj-3hatk) and vecr=(hati-hatj+2hatk)+mu(2hati+4hatj-5hatk) is

The line through hati+3hatj+2hatk and perpendicular to the lines vecr=(hati+2hatj-hatk)+lamda(2hati+hatj+hatk) and vecr=(2hati+6hatj+hatk)+mu(hati+2hatj+3hatk) is

The line through hati+3hatj+2hatk and perpendicular to the lines vecr=(hati+2hatj-hatk)+lamda(2hati+hatj+hatk) and vecr=(2hati+6hatj+hatk)+mu(hati+2hatj+3hatk) is