IF a is a unit vector , then | a xx ...

IF `a` is a unit vector , then `| a xx hati |^2 +| a xx hatj |^2 + |a xx hatk |^2 =`

A

2

B

4

C

1

D

0

Verified by Experts

The correct Answer is:

A

Similar Questions

Explore conceptually related problems

If a and b are unit vectors such that |a xx b| = a.b , then |a + b|^(2) =

IF the vectors a = hati + hatj + hatk , b = hati - hatj + 2 hatk and c= x hati +(x-2) hatj - hatk are coplanar , then x=

If a = 2 hati + j - 3 hatk , b = hati - 2 hatj + 3hatk , c = - hati + hatj - 4hatk and d = hati + hatj + 2hatk , then (a xx b) xx ( c xx d) =

If the vectors vecP = a hati + a hatj + 3 hatk and vecQ = a hati - 2 hatj - hatk are perpendicular to each other . Find the value of a ?