Current location - Training Enrollment Network - Mathematics courses - There is a math problem that I can't do. I know the answer, but I don't know how to use it I want to ask you.
There is a math problem that I can't do. I know the answer, but I don't know how to use it I want to ask you.
Use the knowledge that the height of an object at the same time of the day is directly proportional to the shadow growth.

Solution: Make the vertical line BC of DE in E and extend the intersection BC of AD in F. 。

∠ DCE = 30, then DE = CD/2 = 2；; CE=√(CD？ De? )=2√3.

∫DE/EF = GH/HP ..

That is 2/EF= 1/2.

∴ ef = 4m。 Then BF=BC+CE+EF= 14+2√3.

AB/BF=GH/HP= 1/2, then AB=BF/2=(7+√3) meters.

Related articles
  • Math is tricky.
  • The problem-solving process of induction in senior high school mathematics
  • How to calculate the math problem 5-()+2=3 for a large class of children?
  • Can I take the postgraduate entrance examination after upgrading from junior college to undergraduate college?
  • Moonlight box mathematics
  • Answers to the Second Mathematical Modeling in Xiqing District
  • Summary and reflection after the exam
  • Difficult problems in mathematics in grade three.
  • Methods of learning olympiad
  • Where can I find Chinese and math e-books for grade seven?

    • copyright 2024 Training Enrollment Network All rights reserved