Java atan () method

Java Number classes

atan () method returns the specified double type parameters arctangent.

grammar

double atan(double d)

parameter

• d - any native data types.

return value

Returns the double type parameters arctangent.

Examples

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, the output is:

pi 的值为 3.1416
0.7071 的反正切值 35.2644 度 

Java Number classes