Testing. In 2022, the college entrance examination of higher mathematics in Jiangxi Province included: function, limit, continuity, differential calculus of univariate function and its application, integral calculus of univariate function and its application. Trigonometric function is one of the basic elementary functions, with angle as the independent variable, which corresponds to the coordinates of the intersection point between the terminal of any angle and the unit circle or its ratio as the dependent variable.