Trig

/**
* Triacontakai
* Just a trig calculator that I may or may not convert to do more stuff than just trig later
* Can solve for angles and am currently working on solving for triangles.
* Outputs in DEGREES, I might make this an option later
*/
import java.util.*;
public class Trig {
    public static void main(String[] args){
        Scanner lnscan = new Scanner(System.in);
        Scanner optscan = new Scanner(System.in);
        System.out.println("Trig Calculator");
        System.out.println("1) Solve for angle");
        System.out.println("2) Solve for triangle");
        //System.out.println("2) Solve for side");
        int opt = optscan.nextInt();
        if (opt == 1){
            //solve for angle
            System.out.println("1) Sine (O/H)");
            System.out.println("2) Cosine (A/H)");
            System.out.println("3) Tangent (O/A)");
            opt = optscan.nextInt();
            if (opt == 1){
                System.out.println("Enter your side lengths (O/H): ");
                String stemp = lnscan.nextLine();
                String[] sides = stemp.split("/");
                double x = Double.parseDouble(sides[0]);
                double y = Double.parseDouble(sides[1]);
                double ans = Math.toDegrees(Math.asin(x/y));
                System.out.println("Answer: "+ ans);
            }
            else if (opt == 2){
                System.out.println("Enter your side lengths (A/H): ");
                String stemp = lnscan.nextLine();
                String[] sides = stemp.split("/");
                double x = Double.parseDouble(sides[0]);
                double y = Double.parseDouble(sides[1]);
                double ans = Math.toDegrees(Math.acos(x/y));
                System.out.println("Answer: "+ ans);
            }
            else if (opt == 3){
                System.out.println("Enter your side lengths (O/A): ");
                String stemp = lnscan.nextLine();
                String[] sides = stemp.split("/");
                double x = Double.parseDouble(sides[0]);
                double y = Double.parseDouble(sides[1]);
                double ans = Math.toDegrees(Math.acos(x/y));
                System.out.println("Answer: "+ ans);
            }
            else{
                System.out.println("Invalid option!");
            }
        }
        else if (opt == 2){
            //solve for triangle
            int op = 0;
            String aleg = "";
            String oleg = "";
            String hypo = "";
            System.out.println("Enter angle measure: ");
            String ang = lnscan.nextLine();
            if (!ang.isEmpty()){
                op++;
            }
            System.out.println("Enter adjacent leg (if no angle, ignore 'adjacent'): ");
            aleg = lnscan.nextLine();
            if (!aleg.isEmpty()){
                op++;
            }
            if (op < 2){
                System.out.println("Enter opposite leg (if no angle, ignore 'opposite'): ");
                oleg = lnscan.nextLine();
                if (!oleg.isEmpty()){
                    op++;
                }
            }
            if (op < 2){
                System.out.println("Enter hypotenuse: ");
                hypo = lnscan.nextLine();
                if (!hypo.isEmpty()){
                    op++;
                }
            }
            if (op < 2){
                System.out.println("Enter 2 values please!");
            }
//START CALCULATIONS HERE
                if (!ang.isEmpty()){
                        if (!hypo.isEmpty()){
                            double angr = Math.toRadians(Double.parseDouble(ang));
                            double adjacent = Double.parseDouble(hypo)*Math.cos(angr);
                            double opposite = Double.parseDouble(hypo)*Math.sin(angr);
                            double ang2 = 90.0 - Double.parseDouble(ang);
                            System.out.println("Inputted angle: "+ ang);
                            System.out.println("Hypotenuse: "+ hypo);
                            System.out.println("Adjacent: "+ adjacent);
                            System.out.println("Opposite: "+ opposite);
                            System.out.println("Other angle: "+ ang2);
                        }
                        if (!aleg.isEmpty()){
                            double angr = Math.toRadians(Double.parseDouble(ang));
                            double hypotenuse = Double.parseDouble(aleg)/Math.cos(angr);
                            double opposite = Double.parseDouble(aleg)*Math.tan(angr);
                            double ang2 = 90.0 - Double.parseDouble(ang);
                            System.out.println("Inputted angle: "+ ang);
                            System.out.println("Hypotenuse: "+ hypotenuse);
                            System.out.println("Adjacent: "+ aleg);
                            System.out.println("Opposite: "+ opposite);
                            System.out.println("Other angle: "+ ang2);
                        }
                        if (!oleg.isEmpty()){
                            double angr = Math.toRadians(Double.parseDouble(ang));
                            double hypotenuse = Double.parseDouble(oleg)/Math.sin(angr);
                            double adjacent = Double.parseDouble(oleg)/Math.tan(angr);
                            double ang2 = 90.0 - Double.parseDouble(ang);
                            System.out.println("Inputted angle: "+ ang);
                            System.out.println("Hypotenuse: "+ hypotenuse);
                            System.out.println("Adjacent: "+ adjacent);
                            System.out.println("Opposite: "+ oleg);
                            System.out.println("Other angle: "+ ang2);
                        }
                }
                else{
                    if (!oleg.isEmpty() && !aleg.isEmpty()){
                        double ang1 = Math.atan(Double.parseDouble(oleg)/Double.parseDouble(aleg));
                        double hypotenuse = Double.parseDouble(oleg)/Math.sin(ang1);
                        ang1 = Math.toDegrees(ang1);
                        double ang2 = 90.0 - ang1;
                        System.out.println("Main angle: "+ ang1);
                        System.out.println("Hypotenuse: "+ hypotenuse);
                        System.out.println("Adjacent: "+ aleg);
                        System.out.println("Opposite: "+ oleg);
                        System.out.println("Other angle: "+ ang2);
                    }
                    if (!oleg.isEmpty() && !hypo.isEmpty()){
                        double ang1 = Math.asin(Double.parseDouble(oleg)/Double.parseDouble(hypo));
                        double adjacent = Double.parseDouble(hypo)*Math.cos(ang1);
                        ang1 = Math.toDegrees(ang1);
                        double ang2 = 90.0 - ang1;
                        System.out.println("Main angle: "+ ang1);
                        System.out.println("Hypotenuse: "+ hypo);
                        System.out.println("Adjacent: "+ adjacent);
                        System.out.println("Opposite: "+ oleg);
                        System.out.println("Other angle: "+ ang2);
                    }
                    if (!aleg.isEmpty() && !hypo.isEmpty()){
                        double ang1 = Math.acos(Double.parseDouble(aleg)/Double.parseDouble(hypo));
                        double opposite = Double.parseDouble(hypo)*Math.sin(ang1);
                        ang1 = Math.toDegrees(ang1);
                        double ang2 = 90.0 - ang1;
                        System.out.println("Main angle: "+ ang1);
                        System.out.println("Hypotenuse: "+ hypo);
                        System.out.println("Adjacent: "+ aleg);
                        System.out.println("Opposite: "+ opposite);
                        System.out.println("Other angle: "+ ang2);
                    }
                }

            /*System.out.println("Do you have an angle? Y/N")
            char yn = optscan.next().charAt(0);
            switch(yn){
                case y: System.out.println("State angle measure: ");

                case n: System.out.println("State your first side in the format (H/L:Measure): ");
                        String stemp = lnscan.nextLine();
                        String[] sides = stemp.split(":");
                        String s1type = sides[0];
                        String s1meas = sides[1];

                case default:   System.out.println("Invalid option!");*/

            /*System.out.println("1) Sine (O/H)");
            System.out.println("2) Cosine (A/H)");
            System.out.println("3) Tangent (O/A)");
            opt = optscan.nextInt();
            if (opt == 1){

            }
            else if (opt == 2){

            }
            else if (opt == 3){

            }
            else{
                System.out.println("Invalid option!");
            }*/
        }
        else{
            System.out.println("Invalid option!");
        }
    }
}