# Java program to find the trigonometric arc cosine of an angle

Given an angle, we have to find the trigonometric arc cosine.
Submitted by Nidhi, on May 14, 2022

Problem Solution:

In this program, we will read a degree from the user using the Scanner class. Then we will find the trigonometric arc cosine of a given angle using the Math.acos() method and print the result.

Program/Source Code:

The source code to find the trigonometric arc cosine of an angle is given below. The given program is compiled and executed successfully.

```// Java program to find the trigonometric arc cosine
// of an angle

import java.util.*;

public class Main {
public static void main(String[] args) {
Scanner X = new Scanner(System.in);

double degree = 0;

System.out.print("Enter value in degree: ");
degree = X.nextDouble();

System.out.print("Trigonometric arc cosine is: " + Math.acos(rad));
}
}
```

Output:

```Enter value in degree: 30
Trigonometric arc cosine is: 1.0197267436954502
```

Explanation:

In the above program, we imported the "java.util.*" package to use the Scanner class. Here, we created a public class Main that contains a main() method.

The main() method is the entry point for the program. Here, we created a variable degree of double type and read its value from the user using the nextDouble() method of the Scanner class. Then we converted the degree into radian using the Math.toRadians() method. After that, we found the trigonometric arc cosine using the Math.acos() method and printed the result.

Preparation

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