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Javaで「三角関数に関する計算を行う」の動作を確認してみた

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概要

Javaで「三角関数に関する計算を行う」の動作を確認してみました。以下のページを参考にしました。

実装

以下のファイルを作成しました。

JSample9_1.java
class JSample9_1{
  public static void main(String[] args){
    System.out.println("sin30° = " + Math.sin(Math.PI / 6));
    System.out.println("sin45° = " + Math.sin(Math.PI / 4));
    System.out.println("cos60° = " + Math.cos(Math.PI / 3));
    System.out.println("cos45° = " + Math.cos(Math.PI / 4));
    System.out.println("tan60° = " + Math.tan(Math.PI / 3));
    System.out.println("tan45° = " + Math.tan(Math.PI / 4));
  }
}

以下のコマンドを実行しました。

$ javac JSample9_1.java 
$ java JSample9_1 
sin30° = 0.49999999999999994
sin45° = 0.7071067811865475
cos60° = 0.5000000000000001
cos45° = 0.7071067811865476
tan60° = 1.7320508075688767
tan45° = 0.9999999999999999

まとめ

何かの役に立てばと。

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