Does Vector2LineAngle need normalized vectors?

[couryrr]

I have been doing some simple visualization while trying to re-learn linear algebra. While doing so I was trying to show the angle from the center of the screen to the mouse position .

I was passing normalized vectors based on the comment here:

angle := rl.Vector2LineAngle(rl.Vector2Normalize(mid), rl.Vector2Normalize(mouse))

Since that did not give me the value I was expecting I updated my code to use Vector2Angle but missed updating the method so had:

angle := rl.Vector2LineAngle(mid, mouse)

The above call does not use normalized vectors but give me the correct degree.

Here is the simple code I put together:

Curious too how to use Vector2Angle the degree never seems to match what I expect with the actual vector or the normalized.

package main

import (
	"fmt"

	rl "github.com/gen2brain/raylib-go/raylib"
)

func main(){
    rl.InitWindow(1920, 1080, "Learning raylib math")
    defer rl.CloseWindow()
    
    mid := rl.Vector2{X: 1920/2, Y:1080/2}

    for !rl.WindowShouldClose(){
        mouse := rl.GetMousePosition()
        rl.BeginDrawing()

        rl.ClearBackground(rl.Black)
        rl.DrawPixelV(mid, rl.Green)
        rl.DrawCircleLines(int32(mid.X), int32(mid.Y), 50, rl.Green)
        
        rl.DrawLineV(mid, mouse, rl.Red)
        
        angle := rl.Vector2Angle(mid, mouse)
        lineAngle := rl.Vector2LineAngle(mid, mouse)

        rl.DrawText(fmt.Sprintf("Angle:\nDegree: %f\nLine Angle:\nDegree: %f\nVectors:\nMid: %v - %v\nMouse: %v - %v", angle * rl.Rad2deg,lineAngle*rl.Rad2deg, mid, rl.Vector2Normalize(mid), mouse, rl.Vector2Normalize(mouse)), 10, 10, 20, rl.Green)
        rl.EndDrawing()
    }

}

[JupiterRider]

Vector2LineAngle and Vector2Angle are producing the same result like in raylib C.
At least our Go functions are not faulty.