怎麼用JAVA來算三角函數

Question

請問......cos (180)要怎麼用java的程式來算....程式該如何寫???

Answer 1

//Power by Eclipse
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import java.io.*;
import java.util.*;
public class TEST
//檔名：TEST.java
{
public static void main(String[] args)
{
PrintStream o=new PrintStream(System.out);
Scanner in=new Scanner(System.in);
o.printf("Input degree: ");
double deg=in.nextDouble();
double radian=Math.PI*deg/180;
o.printf("sin(%f)= %f\n",deg,Math.sin(radian));
o.printf("cos(%f)= %f\n",deg,Math.cos(radian));
o.printf("tan(%f)= %f\n",deg,Math.tan(radian));
}
}