Proving tan(A+B)=tanA+tanB/(1-tanA*tanB)

import java.util.Scanner;
class Trigo{
    public static void main(String[] args){
                Scanner sc = new Scanner(System.in);
                System.out.print("A: ");
                double A = sc.nextDouble();
                System.out.print("B: ");
                double B = sc.nextDouble();
                double tanA=Math.tan(A);
                double tanB=Math.tan(B);
                System.out.println("tan(A+B) = "+ Math.tan(A+B));
                System.out.println("tanA+tanB/(1-tanA*tanB) = "+((tanA+tanB)/(1-tanA*tanB)));
                System.out.println("The values are almost identical, proving the theorem.");
                System.out.println("\nAll values are in radians.")
        }
}