角度和弧度转换

def solve():
    import math
    def degree_to_radian(degree):
        return degree * math.pi / 180
    def radian_to_degree(radian):
        return radian * 180 / math.pi
    print(f"30度 = {degree_to_radian(30):.4f}弧度")
    print(f"π弧度 = {radian_to_degree(math.pi):.4f}度")