trigonometric cosine

基本解释

Google can even work with trigonometric functions, including sine and cosine. Google.
甚至能用三角函數計算，包括正弦和餘弦。
Is a mathematical function that returns the trigonometric cosine of the specified angle, in radians, in the specified expression.
一個數學函數，返廻指定表達式中以弧度表示的指定角的三角餘弦。
Sine and Cosine is the triangular relationship between the corners and trigonometric functions of the most common, the two most important theorems.
正、餘弦定理的幾點應用摘要正弦定理和餘弦定理是三角形邊角關系及三角函數種最常見、最主要的兩個定理。