trigonometricdemo.java

这是一个英文版的《Java程序设计与问题解决》现在好多大学都当成教材

public class TrigonometricDemo {
    public static void main(String[] args) {
        double degrees = 45.0;
        double radians = Math.toRadians(degrees);
        
        System.out.println("The value of pi is " + Math.PI);
        System.out.println("The sine of " + degrees + " is " + Math.sin(radians));
        System.out.println("The cosine of " + degrees + " is " + Math.cos(radians));
        System.out.println("The tangent of " + degrees + " is " + Math.tan(radians));
        System.out.println("The arc sine of " + Math.sin(radians) + " is " +
                           Math.toDegrees(Math.asin(Math.sin(radians))) + " degrees");
        System.out.println("The arc cosine of " + Math.cos(radians) + " is " + 
                           Math.toDegrees(Math.acos(Math.cos(radians))) + " degrees");
        System.out.println("The arc tangent of " + Math.tan(radians) + " is " + 
                           Math.toDegrees(Math.atan(Math.tan(radians))) + " degrees");
    }
}