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asin() 方法返回指定 double 值的反正弦。
double asin(double d)
d - double 数据类型。
返回指定 double 值的反正弦。
public class Main { public static void main(String args[]) { double degrees = 45.0; double radians = Math.toRadians(degrees); System.out.format("The value of pi is %.4f%n", Math.PI); System.out.format("The arcsine of %.4f is %.4f degrees %n", Math.sin(radians), Math.toDegrees(Math.asin(Math.sin(radians)))); } }
上面示例编译运行结果如下
The value of pi is 3.1416
The arcsine of 0.7071 is 45.0000 degrees