The vectors `2hati+3hatj-4hatk and a hati+bhatj+chatk` are perpendicular,

The vectors 2hati + 3hatj -4hatk and ahati+bhatj+chatk are perpendicular when :

The vectors 2hati+hatj-4hatk and ahati+bhatj+chatk are perpendicular, if

The vectors 2hati+hatj-4hatk and ahati+bhatj+chatk are perpendicular, if

The vectors which is/are coplanar with vectors hati+hatj+2hatk and hati+2hatj+hatk and perpendicular to the vector hati+hatj+hatk is /are (A) hatj-hatk (B) -hati+hatj (C) hati-hatj (D) -hatj+hatk

The vectors which is/are coplanar with vectors hati+hatj+2hatk and hati+2hatj+hatk and perpendicular to the vector hati+hatj+hatk is /are (A) hatj-hatk (B) -hati+hatj (C) hati-hatj (D) -hatj+hatk

The vectors which is/are coplanar with vectors hati+hatj+2hatk and hati+2hatj+hatk and perpendicular to the vector hati+hatj+hatk is /are (A) hatj-hatk (B) -hati+hatj (C) hati-hatj (D) -hatj+hatk

Prove that the vectors A=2hati-3hatj+hatk and B=hati+hatj + hatk are mutually perpendicular .

prove that the vectors A=2hati-3hatj+hatk and B=hati+hatj + hatk are mutually perpendicular .

For what values of a and b , will the vectors 2hati-3hatj-hatk and ahati+bhatj-2hatk be parallel to each other ?

Three vectors vecA=ahati+hatj+hatk, vecB=hati+bhatj+hatk and vecC=hati+hatj+chatk are mutually perpendicular (hati,hatj and hatk are unit vectors along X, Y, and Z axis respectively). The respective values of a,b and c are