imo class 12 three dimensional geometry

Which of the following is a unit direction vector?

VAVidaara Admin Asked 6d ago 0 views 0 answers
#IMO#Class 12#Mathematics#Three-Dimensional Geometry#logical-reasoning

Which of the following is a unit direction vector?

  • A. (1/√2,1/√2,0)
  • B. (1,1,0)
  • C. (2,0,0)
  • D. (1,2,2)

Answer: A) (1/√2,1/√2,0)

Explanation: Magnitude=(1/2+1/2)^(1/2)=1.

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