Java.lang.StrictMath.cos() Method

Description

The java.lang.StrictMath.cos() method returns the trigonometric cosine of an angle. It includes −

If the argument is NaN or an infinity, then the result is NaN.

Declaration

Following is the declaration for java.lang.StrictMath.cos() method

```public static double cos(double a)
```

Parameters

a − This is angle, in radians.

Return Value

This method returns the cosine of the argument.

NA

Example

The following example shows the usage of java.lang.StrictMath.cos() method.

```package com.tutorialspoint;

import java.lang.*;

public class StrictMathDemo {

public static void main(String[] args) {

double d1 = (60*(Math.PI))/180 , d2 = 0.0, d3 = (1.0/0.0) ;

// returns the trigonometric cosine of specified angle in radian
double cosValue = StrictMath.cos(d1);
System.out.println("Trigonometric cosine of d1 = " + cosValue);

cosValue = StrictMath.cos(d2);
System.out.println("Trigonometric cosine of d2 = " + cosValue);

cosValue = StrictMath.cos(d3);
System.out.println("Trigonometric cosine of d3 = " + cosValue);
}
}
```

Let us compile and run the above program, this will produce the following result −

```Trigonometric cosine of d1 = 0.5000000000000001
Trigonometric cosine of d2 = 1.0
Trigonometric cosine of d3 = NaN
```
java_lang_strictmath.htm