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

Find the angle between the planes. vecr.(hati+hatj+2hatk)=5 and vecr.(2hati-hatj+hatk)=8 .

Find the angles between the planes vecr(hati-2hatj-2hatk)=1 and vecr(3hati-6hatj+2hatk)=0

Find the angle between the planes vecr.(3hati-4hatj+5hatk)=0 and vecr.(2hati-hatj-2hatk)=7 .

The angle between the planes vecr.(2hati-hatj+hatk)=6 and vecr.(hati+hatj+2hatk)=5 is

The angles between the planes vecr.(3hati-6hatj+2hatk)=4 and vecr.(2hati-hatj+2hatk)=3 , is

Find the angle between the planes vecr.(hati+hatj)=1 and vecr.(hati+hatk)=3 .

Find the acute angle between the following planes: i) vecr.(hati+hatj-2hatk)=5 and vecr.(2hati+2hatj-hatk)=9 ii) vecr.(hati+2hatj-hatk)=6 and vecr.(2hati-hatj-hatk)+3=0

Find the angle between the line vecr = (hati +2hatj -hatk ) +lambda (hati - hatj +hatk) and vecr cdot (2hati - hatj +hatk) = 4.

The angle between the planes vecr. (2 hati - 3 hatj + hatk) =1 and vecr. (hati - hatj) =4 is

The distance between the planes given by vecr.(hati+2hatj-2hatk)+5=0 and vecr.(hati+2hatj-2hatk)-8=0 is