If |vec(A )| = |vec(B)| andvec(A) !=+- vec(B) then angle between the vectors (vec(A) +vec(B)) and(vec(A)-vec(B)) is :

If |vec(A )| = |vec(B)| andvec(A) !=+- vec(B) then angle between the v

1.	If \|vec(A )\| = \|vec(B)\| andvec(A) !=+- vec(B) then angle between the vectors (vec(A) +vec(B)) and(vec(A)-vec(B)) is :
Answer» 0 `PI//6` `pi//3` `pi //2` ANSWER :D