Find the angle between the force`(bar F=(3hati+4hatj+5hatk)N` and displacement `(bar d)=(5hati+4hatj+3hatk)m`

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

Find the angle between the vectors veca=hati+hatj-hatk and vecb=hati-hatj+hatk

Find the angle between the pair of lines given by barr=3 hati+2 hatj-4 hatk+lambda(hati+2 hatj+2 hatk) and vecr=5 hati -2 hatj+mu(3 hati+2 hatj+6 hatk)

Find the angle between the following pairs of lines. vecr = 3hati+hatj-hatk+lambda(hati-hatj-hatk) vecr = 2hati-hatj-56hatk+mu(3hati-5hatj-4hatk)

Find the angle between the following pairs of lines: i) vecr=2 hati-5 hatj+hatk+lambda(3 hati+2 hatj+6 hatk) and vecr=7 hati-6 hatk+mu(hati+2 hatj+2 hatk) (ii) vecr=3 hati+hatj-2 hatk+lambda(hati-hatj-2 hatk) and vecr=2 hati-hatj-5 6 hatk+mu(3 hati-5 hatj-4 hatk)