sine
sine — 名詞
- sinesingular
- sinesplural
1. For a triangle containing a 90° corner, the sine of a smaller angle is the numbe
正弦
直角三角形中對邊與斜邊的比值
For a triangle containing a 90° corner, the sine of a smaller angle is the number that results from dividing the opposite side's length by the longest side's length.
To find the sine of an angle in a right triangle, divide the opposite side by the hypotenuse.
要找出直角三角形中某角的正弦，就用對邊長除以斜邊長。
sine of [angle] = opposite ÷ hypotenuse
Mei calculated the sine of 30 degrees and got 0.5, just as her textbook said.
Mei 算出 30 度的正弦是 0.5，跟課本寫的一模一樣。
sine of [angle] = numerical value
Kenji calculated the sine of angle A as 0.8 using the sides of his right triangle.
Kenji 用他那個直角三角形的邊長算出 A 角的正弦值為 0.8。
The sine of a 45-degree angle always equals about 0.707, no matter how big or small the triangle is.
45 度的正弦永遠約等於 0.707，不管三角形是大還是小。
sine value is constant for a given angle regardless of triangle size
Sofia used the sine button on her calculator to finish her trigonometry homework.
Sofia 用計算機上的正弦鍵來完成她的三角函數作業。
- sine of an angle
- calculate the sine
- find the sine
- sine function
- sine value
- sin
Standard abbreviation used in formulas and on calculators; identical meaning.
用法筆記
Mainly used in geometry and trigonometry contexts. The sine function also appears in physics and engineering for describing wave patterns.
常見錯誤
同根字
- sin縮寫B1
- arcsine名詞C1
- sinusoidal形容詞C1