Java Math tan() method with Examples

The java.lang.Math.tan() returns the trigonometric tangent of an angle.

If the argument is NaN or an infinity, then the result returned is NaN.
If the argument is zero, then the result is a zero with the same sign as the argument.

Syntax :

public static double tan(double angle)
Parameters :
The function has one mandatory parameter angle which is in radians.

Returns :
The function returns the trigonometric tangent of an angle.

Example 1 : To show the working of java.lang.Math.tan() method.

// Java program to demonstrate working 
// of java.lang.Math.tan() method 
import java.lang.Math; 
  
class Gfg { 
  
    // driver code 
    public static void main(String args[]) 
    { 
        double a = 30; 
          
        // converting values to radians 
        double b = Math.toRadians(a); 
  
        System.out.println(Math.tan(b)); 
  
        a = 45; 
          
        // converting values to radians 
        b = Math.toRadians(a); 
  
        System.out.println(Math.tan(b)); 
  
        a = 60; 
          
        // converting values to radians 
        b = Math.toRadians(a); 
  
        System.out.println(Math.tan(b)); 
  
        a = 0; 
          
        // converting values to radians 
        b = Math.toRadians(a); 
  
        System.out.println(Math.tan(b)); 
    } 
} 

Output :

0.5773502691896257
0.9999999999999999
1.7320508075688767
0.0

Example 2 : To show the working of java.lang.Math.tan() method when an argument is NAN or infinity.

// Java program to demonstrate working 
// of java.lang.Math.tan() method infinity case 
import java.lang.Math; 
  
public class GFG { 
    public static void main(String[] args) 
    { 
  
        double positiveInfinity =  
               Double.POSITIVE_INFINITY; 
        double negativeInfinity =  
               Double.NEGATIVE_INFINITY; 
        double nan = Double.NaN; 
        double result; 
  
        // Here argument is negative infinity,  
        // output will be NaN 
        result = Math.tan(negativeInfinity); 
        System.out.println(result); 
  
        // Here argument is positive infinity,  
        // output will also be NaN 
        result = Math.tan(positiveInfinity); 
        System.out.println(result); 
  
        // Here argument is NaN, output will be NaN 
        result = Math.tan(nan); 
        System.out.println(result); 
    } 
} 

Output :

NaN
NaN
NaN

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