计算角度的反正切值：
#include <stdio.h>#include <math.h>int main() { double angle = 45.0; double result = atan(angle * M_PI / 180); // 将角度转换为弧度 printf("The arctan of %f is %f radians\n", angle, result); return 0;}#include <stdio.h>#include <math.h>int main() { double adjacent = 3.0; double opposite = 4.0; double angle = atan(opposite / adjacent) * 180 / M_PI; // 计算反正切值并将弧度转换为角度 printf("The angle of the right triangle is %f degrees\n", angle); return 0;}#include <stdio.h>#include <math.h>int main() { double x1 = 1.0, y1 = 1.0; double x2 = 2.0, y2 = 2.0; double angle = atan((y2 - y1) / (x2 - x1)) * 180 / M_PI; // 计算两点之间的夹角 printf("The angle between the two points is %f degrees\n", angle); return 0;}
