Law Of Sine
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Law Of Sine
by Petahwil Sat Dec 01, 2012 3:12 pm
Program To Help You With Your Trig!! 
- Code:
import java.util.Scanner;
/**
*
* @author petahwil
*/
public class LawOfSines {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
// TODO code application logic here
Scanner in = new Scanner(System.in);
System.out.print("Enter if you would like the answer in Rad or Deg: ");
String mode = in.next();
boolean check = true;
if ("Rad".equals(mode))
{
check = true;
}
else if ("Deg".equals(mode))
{
check = true;
}
else
{
System.out.println("Wrong Format Input Rad or Deg!");
check = true;
System.exit(1);
}
System.out.print("Enter in what you are using (A,B,C): ");
String upper = in.next();
String lower = upper;
if ("A".equals(upper)) {
lower = "a";
}
else if ("B".equals(upper)) {
lower = "b";
}
else if ("C".equals(upper)) {
lower = "c";
}
else{
System.out.println("Wrong Format");
System.exit(1);
}
System.out.print("Enter what you are solving for (a,b,c): ");
String lower2 = in.next();
String upper2 = lower2;
if ("a".equals(upper2)) {
upper2 = "A";
}
else if ("b".equals(upper2)) {
upper2 = "B";
}
else if ("c".equals(upper2)) {
upper2 = "C";
}
else{
System.out.println("Wrong Format");
System.exit(1);
}
String solve = lower2;
System.out.print("Enter in " + upper + " vaule: ");
int A = in.nextInt();
System.out.print("Enter in " + lower + " vaule: ");
int a = in.nextInt();
System.out.print("Enter in " + upper2 + " vaule: ");
int c = in.nextInt();
if ("Rad".equals(mode)){
double csine = Math.sin(c);
double asine = Math.sin(A);
double equation = (csine*a)/asine;
System.out.print(solve+" = "+equation);
}
if ("Deg".equals(mode)){
double csine = Math.sin(Math.toRadians(c));
double asine = Math.sin(Math.toRadians(A));
double equation = (csine*a)/asine;
System.out.print(solve+" = "+equation);
}
}
}
Last edited by Petahwil on Sun Dec 02, 2012 6:02 pm; edited 2 times in total
Petahwil- Posts : 8
Join date : 2012-11-30
Age : 31
Re: Law Of Sine
by ThienDinh Sat Dec 01, 2012 3:16 pm
ha ha, i wanna post mine to, mine doesn't handle errors xD 
- Code:
public static void main(String[] args)
{
// TODO code application logic here
Scanner in = new Scanner(System.in);
System.out.println("Program will imply your input angles in degree");
System.out.print("Enter the first angle: ");
double A = in.nextDouble();
System.out.print("Enter the side opposite with this angle: ");
double a = in.nextDouble();
System.out.print("Enter the second angle: ");
double B = in.nextDouble();
double b = a * Math.sin(Math.toRadians(B)) / Math.sin(Math.toRadians(A));
System.out.println("The length of the side opposite the second angle is " + b);
}
ThienDinh- Admin
- Posts : 27
Join date : 2012-11-30 -
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