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package calculator;

import java.util.*;
public class sj {

    
    public sj() {
       Scanner inScanner=new Scanner(System.in);
			System.out.print("请输入一个运算（单位为度）:");
			int a=inScanner.nextInt();
                        System.out.print("接下来摁1是sin函数，2是cos函数，3是tan函数");
                        int y=inScanner.nextInt();
                      if(y==1){
			double x = Math.toRadians(a);
			System.out.println(Math.sin(x));
                      }
                      if(y==2) {
                          double b = Math.toRadians(a);
                        System.out.println(Math.cos(b));
                      }
                       if(y==3){
		        double c = Math.toRadians(a);
                        System.out.println(Math.tan(c));
                            
                      }
    }
}