1.

If â, b̂ and ĉ are unit vectors and |â + b̂|2 = |b̂ + ĉ|2 = |ĉ + â|2 = 8, then |2â + b̂ + ĉ| is equal to

A. 2
B. 4
C. 6
D. none of the above
Answer» D. none of the above


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