No definition for Atan2

I'm working on a project while following Brackeys 2D platformer tutorials on youtube and on his 5th episode, while following the code, i got to a point where it says that there is no definition for Atan2, when i completely followed his tutorial with no issues until then? Just wanted to get a fix so i can carry on making, Thanks.

 

You can get Atan2 by using; Mathf.Atan2()

 

This is my code:

using UnityEngine;
using System.Collections;

public class ArmRotation : MonoBehaviour
{
public int rotationOffset = 90;
public object MathF { get; private set; }


// Update is called once per frame
void Update()
{
Vector3 difference = Camera.main.ScreenToWorldPoint(Input.mousePosition) - transform.position;
difference.Normalize();

float RotZ = MathF.Atan2(difference.y, difference.x) * Mathf.Rad2Deg;
transform.rotation = Quaternion.Euler(0f, 0f, RotZ + rotationOffset);
}

}

But it says Error CS1061 'object' does not contain a definition for 'Atan2' and no extension method 'Atan2' accepting a first argument of type 'object' could be found (are you missing a using directive or an assembly reference?) Any help?

 

MathF is a static function, you do not need this line.

Code (CSharp):

1. public object MathF { get; private set; }

And use like PGJ suggested ...

Mathf.Atan2()

 

When I delete the line of code

Code (CSharp):

1. public object MathF { get; private set; }

It then displays...
Error CS0103 The name 'MathF' does not exist in the current context

 

As well where would I input Mathf.Atan2()?

 

It's "Mathf", not "MathF". Case matters.

 

Have a look at the manual.
http://docs.unity3d.com/ScriptReference/Mathf.Atan2.html

 

Thanks everyone it is now fixed and i will have a look at that manual!