StrictMath tan() Method in Java

The java.lang.StrictMath.tan() is an in-built function in Java which returns the trigonometric tangent of an angle.

Syntax:

public static double tan(double ang)

Parameters: This function accepts a single parameter ang which is a double variable representing an angle (in radians) whose trigonometric tangent is to be returned by the function.



Return Value: This method returns the tangent of the angle passed as argument to the function. It gives rise to special cases:

  • The method returns NaN if the argument is NaN or an infinity.
  • The result is zero with the same sign as the argument, if the argument is zero.

Examples:

Input : ang = 0.5235987755982988(30 degree)
Output : 0.5773502691896257

Input : ang = 0.7853981633974483(45 degree)
Output : 0.9999999999999999

Below programs illustrate the java.lang.StrictMath.tan() function in Java:

Program 1:

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// Java Program to illustrate 
// StrictMath.tan() function
  
import java.io.*;
import java.math.*;
import java.lang.*;
  
class GFG {
    public static void main(String[] args)
    {
  
        double ang = (60 * Math.PI) / 180;
  
        // Display the trigonometric tangent of the angle
        System.out.println("tangent value of 60 degrees : "
                           + StrictMath.tan(ang));
    }
}

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Output:

tangent value of 60 degrees : 1.7320508075688767

Program 2:

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// Java Program to illustrate 
// StrictMath.tan() function
  
import java.io.*;
import java.math.*;
import java.lang.*;
  
class GFG {
    public static void main(String[] args)
    {
  
        double ang = 77.128;
        // Convert the angle to its equivalent radian
        double rad = StrictMath.toRadians(ang);
  
        // Display the trigonometric tangent of the angle
        System.out.println("tangent value of 77.128 degrees : "
                           + StrictMath.tan(rad));
    }
}

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Output:

tangent value of 77.128 degrees : 4.376055350774854

Reference: https://docs.oracle.com/javase/8/docs/api/java/lang/StrictMath.html#tan()



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