Java 中的三角函数示例
数学类包含执行基本数值运算的方法，如初等指数、对数、平方根和三角函数。
-
Java.lang.Math.sin() Method : is an inbuilt method which returns the sine of the value passed as an argument. The value passed in this function should be in radians. If the argument is NaN or an infinity, then the result is NaN. If the argument is zero, then the result is a zero with the same sign as the argument.
语法:
java Math.sin(double radians)参数: 该方法采用一个以弧度为单位的强制参数。
返回: 返回一个双精度值。返回值是传递的指定双精度值的正弦值。
示例 1 : 演示 sin 用法的程序()
```java // Java program for sin() method import java.util.*;
class GFG {
// Driver Code public static void main(String args[]) {
double degrees = 45.0;
// convert degrees to radians double radians = Math.toRadians(degrees);
// sin() method to get the sine value double sinValue = Math.sin(radians);
// prints the sine value System.out.println("sin(" + degrees + ") = " + sinValue); } } ```
输出:
```java sin(45.0) = 0.7071067811865475
```
-
Java.lang.Math.cos() : is an inbuilt method which returns the cosine of the value passed as an argument. The value passed in this function should be in radians. If the argument is NaN or an infinity, then the result is NaN.
语法:
java Math.cos(double radians)参数: 该方法采用一个以弧度为单位的强制参数。
返回: 返回一个双精度值。返回值是传递的指定双精度值的余弦值。
示例 2 : 演示 cos 使用的程序()
```java // Java program for cos() method import java.util.*;
class GFG {
// Driver Code public static void main(String args[]) {
double degrees = 45.0;
// convert degrees to radians double radians = Math.toRadians(degrees);
// cos() method to get the cosine value double cosValue = Math.cos(radians);
// prints the cosine value System.out.println("cos(" + degrees + ") = " + cosValue); } } ```
输出:
```java cos(45.0) = 0.7071067811865476
```
-
Java.lang.Math.tan() : is an inbuilt method which returns the tangent of the value passed as an argument. The value passed in this function should be in radians. If the argument is NaN or an infinity, then the result is NaN. If the argument is zero, then the result is a zero with the same sign as the argument. Syntax :
java Math.tan(double radians)参数: 该方法采用一个以弧度为单位的强制参数。
返回: 返回一个双精度值。返回值是传递的指定双精度值的正切值。
示例 3 : 演示 tan()使用的程序
```java // Java program for tan() method import java.util.*;
class GFG {
// Driver Code public static void main(String args[]) {
double degrees = 45.0;
// convert degrees to radians double radians = Math.toRadians(degrees);
// cos() method to get the tangent value double tanValue = Math.tan(radians);
// prints the tangent value System.out.println("tan(" + degrees + ") = " + tanValue); } } ```
输出:
```java tan(45.0) = 0.9999999999999999
```
版权属于：月萌API www.moonapi.com，转载请注明出处
