puff!
Lin Huowang's words "simple" and "no need to go on stage" immediately caused the whole classroom to burst into laughter.
Sun Jinbu, who was sitting in the back row, couldn't help laughing and said, "Comrade Lin Huowang, it's not like a few years ago, we don't need to be boastful anymore.
This is a trigonometric function problem in our high school, and there are not many students in the class who are confident in solving this kind of problem.
And you are just a fifth-grade primary school graduate, yet you dare to say so arrogantly that this question is very simple?
Tsk tsk! Now I have a rough idea of how you got the title of provincial advanced individual.
Maybe! You are the one who is bragging and fooling people with this, right? "
As soon as Sun Jinbu said this, the students in the classroom all expressed their approval.
After all, for high school students at this time, test scores are of no use and they don’t study the knowledge in textbooks seriously.
Most of the students in a class only have a vague understanding of this simple trigonometric function problem, which should be solved by students in junior high school.
Qian Shujuan also frowned slightly, feeling very disgusted with Lin Huowang's arrogant attitude.
It was clear that she had just been helping Lin Huowang to smooth things over so that his math teacher, Mr. Liu, would stop making things difficult for him.
As a result, he bumped into it headfirst. This time, she didn't care because it was Lin Huowang himself who was embarrassed.
Teacher Liu was also amused by Lin Huowang. He really didn't expect that this newcomer Lin Huowang would be so arrogant!
So he knocked on the blackboard with his pointer and said, "Okay! Then why don't you come up to the stage and do the math for me mentally. If you can really do it, I will respect you."
Unexpectedly...
As soon as Teacher Liu finished speaking, Lin Huowang spoke directly: "This question is a very classic one, an example of using trigonometric functions to calculate the height of a building.
First, directly construct a triangle with the observation position as point A and the tall building as the line segment BC.
In this way, the distance between point A and the bottom B of the building is thirty meters, and the angle ∠BAC=60°.
In the right triangle ABC, tan60° is equal to the ratio of line segment BC to AB, so the building height BC is equal to 30 square root of 3, which is approximately equal to 51.96 meters with a simple mental calculation.
Wow!
Lin Huowang explained all the steps to solve the problem in one breath without any pause.
Even the building height, which is approximately equal to the value at the end, is given with a value accurate to two decimal places.
The whole class, including Teacher Liu, was immediately shocked.
"No... no way? Is this kid really good at math?"
"It's fake! I guess he's just talking nonsense. Does anyone here understand this question? Is he doing it this way?"
"I don't know either! Let's wait and see what Teacher Liu says. But I see Teacher Liu is also stunned. It's likely... Lin Huowang's answer is correct."
"This... How is this possible? We high school students can't even solve this problem, but Lin Huowang, an elementary school student, can solve it? How can we high school students put our faces aside?"
…
Especially Sun Jinbu, Huang Xiaomin and Zhang Aijun in the back row, they stared at Lin Huowang as if he were a monster.
Huang Xiaomin felt something was wrong at the first moment and whispered, "Brothers, this Lin Huowang is too weird. I think we should just admit defeat! Don't mess with this guy, we can't beat him at all."
"I think so. Brother Huang, when we were about to deal with him just now, I discovered that this kid is very agile.
They are as good as some of the experts in our Provincial Public Security Department.
Although he just kept avoiding us and didn't really take any action.
But I am sure that if he makes the slightest move, our bones will fall apart."
Zhang Aijun also came to his senses and even felt a little scared.
Sun Jinbu also swallowed his saliva and said: "But, according to what you said, the forest fire is so severe.
What is he doing here at our Spring City Eleventh High School?"
…
Qian Shujuan, who was sitting next to Lin Huowang, also stared at him with surprise.
She could do this problem, so when Lin Huowang was halfway through, she knew that Lin Huowang had gotten it right, and his math skills were definitely not weak.
“This Lin Huowang, it turns out he really can do it.
But even if he knows the trigonometric function, it is not a big deal! Is it necessary to be so arrogant and say that this problem is easy? "
Blinking her eyes, Qian Shujuan looked at the raging forest as if she were looking at a mystery.
"Oh, right! Sister Shuzhen has interviewed him. If I want to know more about him, can't I just go back and ask Sister Shuzhen?"
At this moment, Qian Shujuan became very interested in Lin Huowang.
She was really curious. With Lin Huowang's family background, under what circumstances did he teach himself mathematics? What other secrets did he have?
Teacher Liu on the podium was also confused for a moment, then adjusted his glasses, nodded slightly awkwardly, and said affirmatively:
"Good! Good! Lin Huowang, your answer is correct.
This problem of using trigonometric functions to find the height of a building is often used in reality.
but……"
At this point, Teacher Liu seemed to want to save face and said, "But this question, just like what Lin Huowang said, is a basic question about trigonometric functions.
Since Lin Huowang has a good grasp of mathematical knowledge on trigonometric functions.
Then I will give you a few more questions to test you and see your true level..."
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