If a is any vector then `(a xx i)^(2) + (a xx j)^(2) + (a xx k)^(2)` =

For any vector vec a , the value of (vec a xx i)^(2) + (vec a xx j)^(2) + (vec a xx k)^(2) =

If veca is any vector, then (vec a xx vec i)^2+(vec a xx vecj)^2+(veca xx vec k)^2 is equal to

For any vector vec(a) , the value of (vec(a) xx vec(i))^(2) + (vec(a) xx vec(j))^(2) + (vec(a) xx vec(k))^(2)=

Show that for any vector vec(a) , ( vec(a) xx hat(i)) ^(2) + ( vec(a) xx hat(j))^(2) + (vec(a) xx hat(k))^(2) =2 |vec(a) |^(2)