Arduino 三角函数

由 drbear 创建，youj 最后一次修改 2016-12-26 你需要使用三角几何来计算移动物体的距离或角速度。Arduino提供了传统的三角函数（sin，cos，tan，asin，acos，atan），可以通过编写它们的原型来概括。Math.h包含三角函数的原型。三角函数的精确语法double sin(double x); //returns sine of x radiansdouble cos(double y); //returns cosine of y radiansdouble tan(double x); //returns the tangent of x radiansdouble acos(double x); //returns A, the angle corresponding to cos (A) = xdouble asin(double x); //returns A, the angle corresponding to sin (A) = xdouble atan(double x); //returns A, the angle corresponding to tan (A) = x例子double sine = sin(2); // approximately 0.90929737091double cosine = cos(2); // approximately -0.41614685058double tangent = tan(2); // approximately -2.18503975868