Java cos() Method

Java Number Class

The cos() method is used to return the cosine value of the specified double type parameter.

Syntax

double cos(double d)

Parameters

• d -- any primitive data type.

Return Value

Returns the cosine 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("%.1f 度的余弦值为 %.4f%n", degrees, Math.cos(radians));

    }
}

Compile the above program, the output result is:

pi 的值为 3.1416
45.0 度的余弦值为 0.7071

Java Number Class