Find the angle between the pair of line: `vecr=3hati+2hatj-4hatk+lamda(hati+2hatj+2hatk), vecr=5hati-2hatk+mu(3hati+2hatj+6hatk)`

Find the angle between the lines vecr=3hati-2hatj+6hatk+lamda(2hati+hatj+2hatk) and vecr=(2hatj-5hatk)+mu(6hati+3hatj+2hatk) .

Find the angle between the lines vecr=3hati-2hatj+6hatk+lamda(2hati+hatj+2hatk) and vecr=(2hatj-5hatk)+mu(6hati+3hatj+2hatk) .

Find the angle between the following pair of line: vecr=3hati+hatj-2hatk+lamda(hati-hatj-2hatk) and vecr=2hati-hatj-56hatk+mu(3hati-5hatj-3hatk)

Find the shortest distance between the following pair of line: vecr=hati+hatj+lamda(2hati-hatj+2hatk), vecr=2hati+hatj-hatk+mu(3hati-5hatj+2hatk)

Find the shortest distance between the following pair of line: vecr=hati+2hatj+hatk+lamda(hati-hatj+hatk) and vecr=2hati-hatj-hatk+mu(2hati+hatj+2hatk)

Find the angle between the lines vecr = (hati+hatj)+lambda(3hati+2hatj+6hatk) and vecr = (hati-hatk) + mu(hati+2hatj+2hatk)

Find the angle between the line: vecr=4hati-hatj+lamda(hati+2hatj-2hatk) and vevr=hati-hatj+2hatk-mu(2hati+4hatj-4hatk)

Find the angle between the planes vecr.(hati+hatj-2hatk)=3 and vecr.(2hati-2hatj+hatk)=2 2

Find the angle between the following pair of lines : i. vecr=2hati-5hatj+hatk+lamda(3hati+2hatj+6hatk) and vecr=7hati-6hatk+mu(hati+2hatj+2hatk) ii. (x)/(2)=(y)/(2)=(z)/(1) and (x-5)/(4)=(y-2)/(1)=(z-3)/(8)

Find the angle between each of the following pair of line: vecr=5hati-7hatj+lamda(-hati+4hatj+2hatk) vecr=-2hati+hatk+mu(3hati+3hatk)