sinusoidal function的用法和樣例：
例句
- The inverse function of that restricted sine function is called the arcsine function.
被限定的正弦函數之反函數叫做反正弦函數。 - While for the sinusoidal approximation method, a detail derivation of the amplitude of each sinusoidal function is re-derived for completeness.
為完整性，文中亦詳細推導正弦函數近似法中各個(gè)頻率之振幅。
