challenge the gods

The director originally thought that he had misheard, but soon realized that Chu Yi's arrogance and cockiness did make him look more and more embarrassed.

Before he became the grade level director, he had been a high school math teacher and knew the content of high school math like the back of his hand.Therefore, he did not consult any books or information and directly said to Chu Yi, "You go to the blackboard and write the answer to this question, which is the last question of the high school math multiple choice questions from ten years ago."

The principal had just uttered these words, and the students below turned pale.

There was a pattern to the multiple choice questions.The first few questions were simpler and could be answered by almost any middle schooler.But the further the questions went, the more difficult they became.Especially the last question of the multiple-choice questions is often difficult to answer even for a school bully.Math teachers have told students that when faced with the last question of the multiple-choice questions, you can just give up and guess the answer ABCD, because even if you answer carefully, you may not be able to answer correctly, so it would be better to use the time for the later questions.

However, the director was actually going to use this most difficult multiple choice question to test Chu Yi now?Was this an intention to defeat him right off the bat?

The grade director began to read the question, "If △ABC is an obtuse triangle, find the range of values of arccos(sinA) + arccos(sinB) + arccos(sinC)."

The director's words were met with mixed reactions from the students below.

Most of the students, including the low achievers and middle achievers, were confused and did not even understand what "arc" meant.At the high school level, "arc" is not a key element, but rather a piece of knowledge from elementary school.It appears in the bottom corner of one page of a math textbook, with only a brief mention of "arc".Since most students do not have enough knowledge, they naturally do not understand the meaning of "arc", but at most they find the word familiar.

Many students began to whisper:

"Wow, I don't even understand this topic!"

"Math is really a subject that can drive people crazy!"

"It is estimated that right now, there are 100,000 grass mud horses running wild in Chu Yi's heart ------"

"How can I do this if I don't understand the questions?It's more like a dream!"

"Director is trying to teach Chu Yi a good lesson with difficult questions!Didn't you know all of them?I'll give you one you don't know right away!"

"Chu Yi is also a jerk today, he had to brag, now he can't get down on his own.Originally in the back of the classroom to stand a morning can be resolved things, have to make a mess to go home to rest for a week and remember."

"If Chu Yi can do it, I'll eat the test paper on the spot!"

While the scum and weak students were still exchanging words, the school bullies sitting in the front rows had already entered into battle.For example, Miao Miao, who was first in the class, Muyang, who was second in the class, and Hongwei, who was third in the class, had picked up their pens and were writing quickly on the draft paper, standing by to try and crack the puzzle.

The reason why school bullies became school bullies was because they had an almost crazy obsession with topics.As soon as they see a new question, they want to solve it like a wolf sees a sheep.For them, doing questions is a pleasure and marks are their life!

However, this time, after the schoolboys tried a few times, they suddenly stopped.Instead of the previous joy on their faces, they looked a bit depressed.

The question seemed simple, only a short line, just asking for a range of values.But in reality, when it came to actually doing it they found nowhere to start!It seemed that there were a lot of things to consider, and it also seemed that they were overthinking it.They tried several conventional methods, but none of them worked.It's straightforward to seek a solution, but you don't know where to start.It was like a tiger biting a hedgehog, with nowhere to bite!

At this point, there is only one last method left - judging by the options.Many multiple-choice questions are difficult to solve directly, but some clues can be found by looking at the options.Thus, the schoolboys raised their heads and looked at the blackboard.

Chu Yi had already finished writing the question on the blackboard.

This question was a multiple choice question, and according to the usual practice, the director was just about to name the four options, but he only saw Chu Yi's hand not pause, change the line, and directly write down the answer - (90°-270°)

After Chu Yi finished writing the answer, he twisted his head to look at the director, "Teacher, the answer is 90° to 270°, right?"

The class was immediately in an uproar!

Just after copying the question, the answer was already out?

The students were stunned, this was too fast!

Even if you use an APP like Ape Search or Homework Help to search for the answer, there still has to be a time to take a picture and upload it, how can you give the answer directly?

The panic of the schoolboys in the front row was even more serious.Outsiders look at the scene, insiders look at the doorway.Those dregs and weak students originally couldn't solve this kind of question, so they didn't feel how difficult it was, they just felt that Chu Yi was calculating very quickly.On the other hand, the hegemons were different, they could read this topic, so they knew how difficult it was to solve this question!

Hongwei, who was third in the class, poked Muyang, who was second in the class, with his elbow, "Did he calculate this question correctly?"

Muyang looked puzzled, "I don't know how to do it!"

Muyang once again touched Miao Miao beside him with his pen and inquired in a low voice, "The answer that Chu Yi made, is it really correct?"

Unexpectedly, Miao Miao showed the same confused expression, "This question ...I haven't solved it yet, I don't have any thoughts for now."

The surrounding students were stunned when they overheard the conversation between these two school masters.The top three students in the class couldn't even answer it?Just how difficult was this question?

Yet, it was such a difficult question that Chu Yi had given the answer after copying the question?

People began to wonder, it couldn't be a blind guess on his part, could it?

This idea sprouted in the minds of some of the students and grew stronger.They thought that it was impossible for Chu Yi to solve such a difficult topic independently.Moreover, this was a topic from ten years ago, too old to even be quoted in tutorial materials, much less Chu Yi having ever seen and memorized the answer.Therefore, the only explanation was Chu Yi's random guess!

However, the director's face suddenly changed!

"Well ...That's right, this answer is correct."The principal nodded his head and confirmed.

Instantly, the class fell into silence!

The entire classroom was so quiet that even a pin dropped on the floor could be heard!

Could it be that ...really be right?

All the students froze, what was this?The director and Chu Yi colluded in advance to act?This can not be ah!Or is there someone at the bottom giving Chuyi tips?But that's not right either. Even the top three students in the class couldn't solve it!Who could have given him a hint?

Chu Yi didn't care about the reactions of the class, he just looked at the director, "Then please ask the teacher for the second question!"

The director nodded his head, his complexion becoming complicated.It was estimated that he also did not expect Chu Yi would be able to mentally calculate this question so quickly, and even gave the answer directly without performing a sketch on the blackboard.It was as if this most difficult multiple choice question from the math paper of ten years ago was just a simple level of one plus one equals two in front of him!

After a moment's reflection, the director spoke:

"The next question is the last of the fill-in-the-blanks from the 4-province, 100-school joint exam five years ago.Please listen to the question."