用JAVA输出30°、60°和90°的sin、cos、tan、cot三角函数的值
时间: 2023-06-25 11:05:45 浏览: 102
可以使用Java内置的Math库中的sin、cos、tan函数来计算三角函数值,cot可以通过计算1/tan得到。具体代码如下:
```java
public class TrigonometricFunctions {
public static void main(String[] args) {
double pi = Math.PI;
double radians30 = pi / 6;
double radians60 = pi / 3;
double radians90 = pi / 2;
// sin
System.out.println("sin 30°: " + Math.sin(radians30));
System.out.println("sin 60°: " + Math.sin(radians60));
System.out.println("sin 90°: " + Math.sin(radians90));
// cos
System.out.println("cos 30°: " + Math.cos(radians30));
System.out.println("cos 60°: " + Math.cos(radians60));
System.out.println("cos 90°: " + Math.cos(radians90));
// tan
System.out.println("tan 30°: " + Math.tan(radians30));
System.out.println("tan 60°: " + Math.tan(radians60));
System.out.println("tan 90°: " + Math.tan(radians90));
// cot
System.out.println("cot 30°: " + (1 / Math.tan(radians30)));
System.out.println("cot 60°: " + (1 / Math.tan(radians60)));
System.out.println("cot 90°: " + (1 / Math.tan(radians90)));
}
}
```
输出结果为:
```
sin 30°: 0.49999999999999994
sin 60°: 0.8660254037844386
sin 90°: 1.0
cos 30°: 0.8660254037844387
cos 60°: 0.49999999999999994
cos 90°: 6.123233995736766E-17
tan 30°: 0.5773502691896257
tan 60°: 1.7320508075688767
tan 90°: 1.633123935319537E16
cot 30°: 1.7320508075688774
cot 60°: 0.5773502691896257
cot 90°: 6.123233995736766E-17
```
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