Trong không gian với hệ tọa độ cho đường thẳng và mặt phẳng Gọi là giao điểm giữa và . Viết phương trình đường thẳng nằm trong mặt phẳng , vuông góc với đồng thời khoảng cách từ đến bằng  

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose the correct sentence which is built from the words and phrases given:

  Two days ago / I / buy / a CD-ROM of Cambridge Advanced Learner’s Dictionary / your shop / I still keep the receipt.
  
  

• Choose the correct sentence which is built from the words and phrases given:

  I / not install the program into my computer / I / take / the CD back / the shop / ask for another one.
  
  

• Choose the correct sentence which is built from the words and phrases given:

  Now / I would like / have a refund / change for a better one.
  
  

• Choose a word that has different stress pattern:

  bonus                breakfast                     hurry                    receive

• Choose a word that has different stress pattern:

  equipment                  continue               badminton                promotion

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

  likes                  ends                  gets                    walks

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

  punch                  lunch                  each                   ache

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

  resume                 install                      set                      security

• Choose the best answer for the following sentence:

  I don't think she'll ever ____________ the shock of her mother's death.
   

• Choose the best answer for the following sentence:

  The little girl wouldn't go into the sea ________ her father went too.