| 单词 | 正弦 |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔arc sine〕The inverse function of the sine of an angle.反正弦：角度正弦的反函数美国传统〔cosecant〕The reciprocal of the sine of an angle in a right triangle.余割：直角三角形中一个角正弦的倒数美国传统〔secant〕The reciprocal of the cosine of an angle in a right triangle.正割：直角三角形中一个角正弦的倒数美国传统〔sine wave〕A waveform with deviation that can be graphically expressed as the sine curve.正弦波：一种偏离波形，在图形上可以用正弦曲线来表示美国传统〔sine〕In a right triangle, the ratio of the length of the side opposite an acute angle to the length of the hypotenuse.正弦：在一个直角三角形中，锐角所对边长度与斜边长度之比美国传统〔trigonometry〕Trigonometry concerns the functions of angles, such as sine, cosine, and tangent.三角学研究的是角的函数，例如正弦、余弦和正切。剑桥高阶〔unity〕In a table of natural sines the radius of the circle is regarded as unity.圆的半径在正弦真数表中被视作1。英汉大词典Trigonometry concerns the functions of angles, such as sine, cosine and tangent.三角学是关于角的功能的学科，例如正弦、余弦和正切。剑桥国际 |
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