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63 lines
1.7 KiB
63 lines
1.7 KiB
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package 三角函数运算;
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import java.util.Scanner;
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import java.math.*;
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public class Calculator {
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public static void main(String[] args)
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{
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Scanner sc=new Scanner(System.in);
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double result=1.0;
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String Command=sc.nextLine();
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String parameters=sc.nextLine();
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if(Command.equals("0"))
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result=Calculator.Log(parameters);
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// else if(Command.equals("1"))
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// result=Calculator.ex(parameters);
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// else if(Command.equals("2"))
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// result=Calculator.jjcc(parameters);
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else if(Command.equals("6"))
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result=Calculator.sin(parameters);
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else if(Command.equals("7"))
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result=Calculator.cos(parameters);
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else if(Command.equals("8"))
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result=Calculator.tan(parameters);
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System.out.println(result);
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}
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public static double Log(String s)
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{
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String[] parameters=new String[2];
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parameters=s.split(" ");
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float a=Float.parseFloat(parameters[0]);
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float b=Float.parseFloat(parameters[1]);
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double result=Math.log(b)/Math.log(a);
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return result;
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}
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public static double sin(String s)
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{
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double x=Double.parseDouble(s);
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return Math.sin(Math.toRadians(x));//Math.toRadians()将角度转换为弧度
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}
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public static double cos(String s)
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{
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double x=Double.parseDouble(s);
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return Math.cos(Math.toRadians(x));
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}
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public static double tan(String s)
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{
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double x=Double.parseDouble(s);
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return Math.tan(Math.toRadians(x));
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}
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// public static double jjcc()
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// {
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//
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// }
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// public static double ex()
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// {
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//
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// }
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}
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