I smashed the CP of me and the villain school grass

Song Zuan and Haidai bent their knees slightly, buttocks against the wall, hands on their thighs, panting.

"Huh, senior, you are so quick..."

"Ha... yeah, it exhausted us both..."

a long time……

No one answered.

Only then did the master and apprentice realize that the atmosphere was not right.

When I looked up, where was a senior standing opposite me?

That is a group of seniors!

If you count carefully, you can find that there are exactly 13 of them.

Song Zuan remembered it, no wonder he always felt familiar with the words of seniors on QQ.

"Are all elementary school boys so rude?" "Are all elementary school boys so rude?" Isn't this what Ren Zha said?

This Ren Zha didn't do enough test papers?Come to the door again?

Heiying spoke: "Hahaha, Song Zu'an, today is considered to be in the hands of the [-]th Taibao of our Sunshine University, right? I haven't avenged my meat buns and test papers yet!"

Hai Dai: "Master, what's going on here? What kind of enmity against meat buns? You two..."

Song Zu'an slapped Haidai on the back of the head, "You don't have internet access in your village?"

"Master! You keep patting me on the head, I'm so stupid!"

In the face of the great enemy, the master and apprentice still had a playful smile on their faces, and they didn't pay attention to the seniors at all.

Ren Zha was furious, "You don't know your situation at all! How can you still laugh?"

Song Zuan: "Rebound!"

Ren Zha:? ?

"At first, I thought that today you would sincerely apologize and return the meal card to you, but now it seems that I am still too soft-hearted!"

Ren Zha said while reaching out his hand to explore in the schoolbag.

"Brothers, get on the test paper!"

Thirteen people took out the prepared test papers in their schoolbags and patted them in front of Song Zuan.

"This is the test paper that you made our brothers do too much. You are not allowed to leave today if you don't finish it!"

"No way, no way, with so many of you, how many test papers can't be dealt with? Even the test papers can't be dealt with and you still want to mess with others, oh... the real dish..." Song Zuan immediately began to mock with a sly voice.

"We... who said we can't handle it?!"

"If you can handle it, why do you let me do it? How stupid, you can't do such a simple test paper."

"You talk nonsense, we will do it!"

"Can you do it or do it quickly?"

"If we can do it, you have to apologize to us!"

"If you know how to cook, I can give you meal cards."

"Just do it!"

"But if you don't know how to do it, you have to promise me one thing."

"what's up?"

"The Thirteen Taibao was renamed Thirteen Sages."

"you!"

"Why, don't you dare to gamble?"

"Who says you don't dare? We, the Thirteenth Taibao, have never been afraid of anyone!"

"Okay, do it quickly, I'll give you a flashlight."

The thirteen seniors pressed the test papers against the wall and began to think seriously.

Song Zuan and Haidai turned themselves into invigilators to guard against death. "Make your own, don't copy the classmates next to you."

Hai Dai: I didn't expect that I would have the day to invigilate others.

After a while, a younger brother who really couldn't do it leaned into Ren Zha's ear and said, "Boss, we seem to come to them for a theory, why did we take the exam?"

Ren Zha covered his test paper in his arms, and glared at his younger brother, "Do it yourself, don't copy mine!"

……

An hour later, Song Zu'an put away the test papers of the Thirteenth Taibao, and everyone gathered together to correct the scores.

Among the thirteen people, the highest score was 68, which was taken by Ren Zha.

The minimum score is 5 points, it should be a multiple choice question.

Seeing such a low score, all thirteen people were downcast. Song Zuan cleared his throat, and said seriously: "It doesn't matter if you fail the exam once, I will explain it to you for free. After a while, you will definitely become the real Sunshine High School Ten. Sanxian, the teacher believes in you!"

"The first question is to choose the value of sin45°. You can't memorize this? Isn't this junior high school knowledge?"

Ren Zha muttered: "Isn't there still sin30°, sin60°, cos30°... so many, who remembers it..."

"There are rules, the teacher teaches you to memorize. Generally, we are only required to memorize the trigonometric function values ​​of 30°, 45°, and 60°.

这sin30°等于2分之根号1，sin45°等于2分之根号2，sin60°等于2分之根号3，就是越来越大，是不是很有规律？”

Everyone present, including Haidai, nodded, "Yes."

“记住了sin，那cos还不是简简单单？反过来排列就行了，cos30°等于2分之根号3，cos45°等于2分之根号2，cos60°等于2分之根号1。”

Thirteen Xian suddenly realized, "Is it so easy to remember?!"

"The most troublesome thing for students may be the memory of tan, but in fact, as long as you memorize sin and cos, you can divide the sin value by the cos value to get the tan value of the corresponding angle.

举个例子，sin45°＝2分之根号2，cos45°＝2分之根号2，用sin45°?cos45°就能算出tan45°，同学们算得几？”

"It counts as 1."

"Yes, very good!"

……

When Song Zuan finished explaining the test paper, it was already twelve o'clock at night.

"It's getting late, hurry up and go back to each house, and find each mother."

Thirteen Xian put down the meal card, reluctantly put away the test papers and went home.

It was too late, and Haidai's house was too far away, so Song Zu'an took him home to sleep by the way.

------End of this chapter--