Cho lục giác đều ABCDEF tâm O. Số vectơ khác vecto \(\overrightarrow 0 \), có điểm đầu và điểm cuối là đỉnh hoặc tâm O của lục giác và cùng phương với vectơ \(\overrightarrow {OC} \) là:

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Một số câu hỏi khác có thể bạn quan tâm.

• Choose one sentence that has the same meaning as the root one:

  Completed in 1756, Nassau Hall, which is now standing on the campus of Princeton University, is the oldest building.
  
  

• Choose one sentence that has the same meaning as the root one:

  The hardworking cabinetmaker, Duncan Phyfe, was the one person who was most responsible for making New York City a center of furniture design in the early nineteenth century.
  
  

• Choose one sentence that has the same meaning as the root one:

  She had only just put the phone down when her boss rang back.
  
  

• Choose one sentence that has the same meaning as the root one:

  Her mother is the most warm-hearted person I’ve known.
  
  

• Choose one sentence that has the same meaning as the root one:

  It isn’t necessary for you to finish the report by Sunday.
  
  

• Choose one sentence that has the same meaning as the root one:

  Your refusal to attend the party made everyone sad.
  
  

• Choose one sentence that has the same meaning as the root one:

  Mr. Smith is now the fifth wealthiest man in this city.
  
  

• Choose one sentence that has the same meaning as the root one:

  California attracted people from many countries when gold was discovered in 1848.
  
  

• Choose one sentence that has the same meaning as the root one:

  Were it not for the money, this job wouldn't be worthwhile.
  
  

• Choose one sentence that has the same meaning as the root one:

  As soon as he arrived at the airport, he called home.