The java.lang.StrictMath.atan() is an inbuilt method of StrictMath class which is used to return the tangent of a given argument. It returns the angle is within the range of -pi/2 and pi/2. It gives rise to two special results:
- The output is NaN if the passed parameter is a NaN.
- If the passed argument is 0, then the result is also a 0 retaining the same sign as the argument.
public static double atan(double num)
Parameters: The method accepts one parameter num of double type and refers to the value whose tangent is to be returned.
Return Value: The method returns the arc tangent value of the argument.
Input: num = 0.61 Output: 0.5477400137159024 Input: num = 0.0 Output: 0.0 Input: num = -71.0 Output: -1.5567127509720364
Below programs illustrate the java.lang.StrictMath.atan() method:
The arc tangent of 0.7 = 0.6107259643892086 The arc tangent of 55.0 = 1.5526165117219184 The arc tangent of 0.0 = 0.0
The arc tangent of -0.52 = -0.4795192919925962 The arc tangent of -71.0 = -1.5567127509720364 The arc tangent of 0.0 = 0.0
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