Java atan() method

Java Number Class

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atan() method is used to return the arctangent value of the specified double type parameter.

grammar

double atan(double d)

parameter

• d -- Any native data type.

return value

Returns the arctangent value of the specified double type parameter.

Example

public class Test{ 
	public static void main(String args[]){

		double degrees = 45.0;
		double radians = Math.toRadians(degrees);

		System.out.format("pi 的值为 %.4f%n", Math.PI);
		System.out.format("%.4f 的反正切值 %.4f 度 %n", Math.cos(radians), Math.toDegrees(Math.atan(Math.sin(radians))));

	}
}

Compile the above program and the output result is:

pi 的值为 3.1416
0.7071 的反正切值 35.2644 度 

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Java Number Class