codewars/c/static_lib/trigon.c

#include <math.h>

#include "geometry.h"

double to_radian(double deg) {
    return (PI * deg) / 180;
}

double to_degree(double rad) {
    return (180 * rad) / PI;
}

double cos_deg(double deg) {
    return cos(to_radian(deg));
}

double acos_deg(double deg) {
    return acos(to_radian(deg));
}

double sin_deg(double deg) {
    return sin(to_radian(deg));
}

double asin_deg(double deg) {
    return asin(to_radian(deg));
}