`vec P and vec Q` are two perpendicular vectors. If `vec P = 5 hati +7hatj-3hatk and vec Q=2hati+2hatj-aveck` then the value of a is

Find a unit vector perpendicular the vectors vec(A) = 4 hati = hatj +3 hatk and vec(B) =- 2hati + hatj - 2hatk .

Determine a unit vecor perpendicular to both vec(A) = 2 hati +hatj +hatk and vec(B) = hati - hatj +2hatk

Find the angle between the vectors vec A = hati + hatj + hatk and vec B =-hati - hatj + 2hatk .

What is the angle between two vectors vec P =2hati +3hatj +hatk and vec Q =-3hati +6hatk .

If vec a=2hati+3hatj-hatk , then |vec a| is :

Two vectors vec(P)andvec(Q) are given vec(P)=5hati+7hatj-3hatkandvec(Q)=2hati+2hatj-ahatk. If they are mutually perpendicular then value of 'a' is

Two vectors vec(P)andvec(Q) are given vec(P)=5hati+7hatj-3hatkandvec(Q)=2hati+2hatj-ahatk. If they are mutually perpendicular then value of 'a' is