If ` vec a , vec ba n d vec c` are unit vectors, then `| vec a- vec b|^2+| vec b- vec c|^2+| vec c- vec a|^2` does not exceed `4` b. `9` c. `8` d. `6`

If vec a,vec b and vec c are unit vectors,then |vec a-vec b|^(2)+|vec b-vec c|^(2)+|vec c-vec a|^(2) does not exceed 4 b.9c.8 d.6

If vec a,vec b,vec c are unit vector,prove that |vec a-vec b|^(2)+|vec b-vec c|^(2)+|vec c-vec a|^(2)<=9

If vec a, vec b and vec c are unit vectors then | vec a-vec b | ^ (2) + | vec b-vec c | ^ (2) + | vec c-vec a | ^ (2) is equal to

If vec a,vec b and vec c are unit vectors satisfying |vec a-vec b|^(2)+|vec b-vec c|^(2)+|vec c-vec a|^(2)=9 then |2vec a+5vec b+5vec c| is.

If vec a, vec b and vec c are unit vectors satisfying | vec a-vec b | ^ (2) + | vec b-vec c | ^ (2) + | vec c-vec a | ^ (2) = 9 then | 2vec a + 7vec b + 7vec c | =

Let vec a, vec b, vec c are unit vector where | vec a-vec b | ^ (2) + | vec b-vec c | ^ (2) + | vec c + vec a | ^ (2) = 3 then | vec a + 2vec b + 3vec c | ^ (2) is equal to

If vec a,vec b,vec c are mutually perpendicular unit vectors,find |2vec a+vec b+vec c|

If vec a,vec b and vec c are three non-zero vectors,prove that [vec a+vec b,vec b+vec c,vec c+vec a]=2[vec a,vec b,vec c]

If vec a,vec b,vec c are unit vectors such that vec a+vec b+vec c=vec 0 find the value of vec a+vec b+vec bdot c+vec *vec a