Java Math sin() 方法 Java Math sqrt() 方法 Java Math cos() 方法 Java Math sin() 方法 public class Test { public static void main(String args[]) { double degrees = 45.0; double radians = Math.toRadians(degrees); System.out.format("The value of pi is %.4f%n", Math.PI); System.out.format("The sine of %.1f degrees is %.4f%n", degrees, Math.sin(radians)); } } Java Math sqrt() 方法 Java Math cos() 方法