sine

/saɪn/

Meanings

noun

正弦

In a right triangle, the ratio of the length of the side opposite an angle to the length of the hypotenuse.

Examples :

"In a right triangle with a 30-degree angle, the sine of that angle is 0.5, meaning the side opposite the angle is half the length of the hypotenuse. "

在一个直角三角形中，如果有一个角是30度，那么这个角的正弦值（sine）是0.5，这意味着这个角所对的边长是斜边长度的一半。

math science

Related Words

angle noun

/ˈæŋ.ɡəl/

角度, 角。

"the angle between lines A and B"

直线A和直线B之间的夹角。

opposite noun

/ˈɒpəsɪt/ /ˈɑp(ə)sɪt/

反面，对立面

"My brother's opinion is the opposite of mine on the best way to study for the exam. "

在考试复习的最佳方法上，我哥哥的意见和我的正好相反。

meaning noun

/ˈmiːnɪŋ/

意思，含义

"The meaning of the teacher's hand gesture was clear: "Pay attention." "

老师手势的意思很明显： “注意听讲。”

that noun

/ˈðæt/ /ˈd̪æt/ /ˈðɛt/

那个，那件事。

"My sister brought several books to the library, and that one is about dinosaurs. "

我姐姐带了几本书去图书馆，那本是关于恐龙的。

right adjective

/ˈɹaɪt/

直的，笔直的。

"a right line"

一条直线

with adverb

/wɪθ/ /wɪð/

一同，一起。

"Do you want to come with?"

你想一起去吗？

degree noun

/dɪˈɡɹiː/

学位，学历

"My sister earned a degree in psychology from the university. "

我姐姐从大学获得了心理学学位。

triangle noun

/ˈtɹaɪəŋɡəl/ /ˈtɹaɪˌæŋɡəl/

三角形

"The construction paper shape was a triangle. "

那张彩色卡纸的形状是个三角形。

side noun

/saɪd/

边，侧面。

"A square has four sides."

一个正方形有四条边。

hypotenuse noun

/haɪˈpɒtənjuːz/ /haɪˈpɑt̬ənjus/

直角三角形的斜边, 斜边

"The hypotenuse of the right triangle on my math homework is the longest side. "

我数学作业上的直角三角形，它的斜边是最长的那条边。

length noun

/lɛn(t)θ/

长度，长短。

"The length of the classroom is 20 meters. "

教室的长度是二十米。

ratio noun

/ˈɹeɪ.ʃi.əʊ/ /ˈɹeɪ.ʃiˌoʊ/

比例，比率

"The ratio of boys to girls in the class is 2 to 3. "

这个班里男生和女生的比例是二比三。(Zhège bān lǐ nánshēng hé nǚshēng de bǐlì shì èr bǐ sān.)