引用库:
代码如下:
using GeoAPI.Geometries;
using NetTopologySuite.Features;
using NetTopologySuite.Geometries;
using NetTopologySuite;
using NetTopologySuite.IO;
using Coordinate NetTopologySuite.Geometries.Coordinate;
using GeoAPI…
一、三角函数 ( 1 ) s i n x 2 s i n x 2 c o s x 2 2 t a n x 2 s e c 2 x 2 2 t a n x 2 1 t a n 2 x 2 \begin{aligned} (1)\quad sinx&2sin\frac{x}{2}cos\frac{x}{2}\\ &\frac{2tan\frac{x}{2}}{sec^2\frac{x}{2}}\\ &\frac{2tan\frac{x}{2}}{1tan^2\frac…