Cho đường thẳng \(d\) có VTCP \(\overrightarrow u \) và mặt phẳng \(\left( P \right)\) có VTPT \(\overrightarrow n \). Nếu \(\overrightarrow u  \bot \overrightarrow n \) và một điểm thuộc \(d\) cũng thuộc \(\left( P \right)\) thì:

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose the word that has the underlined part pronounced differently from the rest:

  measure                subsidies                 domestic                 hospital

• Choose the word that has the underlined part pronounced differently from the rest:

  economy             industry                qualify                priority

• Choose the word that has the underlined part pronounced differently from the rest:

  right               private                communist               minority

• Choose the word that has the underlined part pronounced differently from the rest:

  though                 encourage                enough                  country

• Choose the word that has the underlined part pronounced differently from the rest:

  improve               introduce                move                    lose

• Choose one sentence that has the closest meaning to the root one:

  Mary tried to keep calm although she was very disappointed.
  
  

• Choose one sentence that has the closest meaning to the root one:

  Even though it was raining heavily, the explorers decided to continue their journey.
  
  

• Choose one sentence that has the closest meaning to the root one:

  Despite his ability to do the job, he was not offered the position.
  
  

• Choose one sentence that has the closest meaning to the root one:

  He had worked very hard but he failed.
  
  

• Choose one sentence that has the closest meaning to the root one:

  I did not answer the door even though I knew it was my friend.