Trigonometricalfunction in the teaching of mathematics in secondary schools, have a decisive position.
三角函数的教学在中学数学教学中有着举足轻重的地位。
2
In this paper, the deflection and stress function in terms of trigonometricalfunction and polynomial expression are first proposed.
本文首先选择由三角函数和多项式组成的挠度函数和应力函数。
3
Trigonometricalfunction reflects Yuan Movement and the Movement of mutual conversion and the corresponding linear relationship is the only primary function of the cycle function .