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package DataType;

/*

*计算余弦值分为两种：通过弧度计算、通过角度计算

* 1.Math.cos(num) num是一个弧度值

* 2.Math.toRadians(num) 角度转弧度

* 3.Math.toDegrees(num) 弧度转角度

* 4.由角度计算余弦值：Math.cos(Math.toDegrees(num))

* */

public class MathTest {

public static void main(String[] args) {

}

}