jee-advanced 2001 Q26

jee-advanced · India · screening Vectors Introduction & 2D Inequality or Proof Involving Vectors
26. If 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 :
(A) 4
(B) 9
(C) 8
(D) 6
26. If 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 :\\
(A) 4\\
(B) 9\\
(C) 8\\
(D) 6\\