Java.lang.StrictMath.atan() Method

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Description

The java.lang.StrictMath.atan() method returns the arc tangent of a value.The returned angle is in the range -pi/2 through pi/2.It include these cases −

• If the argument is NaN, then the result is NaN.
• If the argument is zero, then the result is a zero with the same sign as the argument.

Declaration

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

public static double atan(double a)

Parameters

a − This is the value whose arc tangent is to be returned.

Return Value

This method returns the arc tangent of the argument.

Exception

NA

Example

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

package com.tutorialspoint;

import java.lang.*;

public class StrictMathDemo {

   public static void main(String[] args) {

      double d1 = 0.20 , d2 = 60.00, d3 = 0;
   
      /* returns the arc tangent of a value, returned angle range is
         -pi/2 to pi/2  */
    
      double dAbsValue = StrictMath.atan(d1); 
      System.out.println("arc tangent of " + d1 + " = " + dAbsValue);

      dAbsValue = StrictMath.atan(d2); 
      System.out.println("arc tangent of " + d2 + " = " + dAbsValue);

      dAbsValue = StrictMath.atan(d3); 
      System.out.println("arc tangent of " + d3 + " = " + dAbsValue);
   }
}

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

arc tangent of 0.2 = 0.19739555984988078
arc tangent of 60.0 = 1.554131203080956
arc tangent of 0.0 = 0.0