Java Math.asin()
方法返回指定double
值的反正弦值。
語法
double asin(double d)
d
- double
資料型別。double
值的反正弦值。public class Test {
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))));
}
}
執行上面範例程式碼,得到以下結果:
The value of pi is 3.1416
The arcsine of 0.7071 is 45.0000 degrees