反三角函数asin,acos,atan,atan2的实现，编写手机游戏的数学相关库时，经常会用到。 ,反三角函数asin, acos, atan, atan2 realization, the preparation of mathematics related to mobile phone games library, is often used.

用 MATLAB 实现三角函数功率谱分析-Trigonometric functions using MATLAB to achieve power spectral analysis

J2ME手机计算器程序源代码，代码整洁规范，功能全面，支持常用的四则运算、三角函数、对数指数函数等运算。-J2ME mobile calculator program source code, code tidy specification, full-featured, supports common arithmetic, trigonometric functions, computing the number of exponential function.