[SOLVED]How can i move a sprite / a tank in screen with rotation?

Newbie & Debugging Questions
#1

Hello guys. Im trying to make a tank move in angles in my screen.
Im forgot the math to do it.

The tank can rotate in the origin and by pressing W or S , the tank should go forward to that direction or backwards.

Help

public void update() {
        
        float x = getX();
        float y = getY();
        float a = 1;
        float b = 1;
        
        //Sprite.getRotation return : the rotation of the sprite in degrees
        a = sprite.getRotation() * MathUtils.degreesToRadians;
        
        b = y - x * a;

        //y = arctan * x + b
        if (pressingRight) {
            sprite.rotate(-5);
        }
        if (pressingLeft) {
            sprite.rotate(5);
        }
        
        if (pressingUp) {
            sprite.setX(x + 3);
            sprite.setY(a * (getX() + 3) + b);
        }
        
        if (pressingDown) {
            sprite.setX(x - 3);
            sprite.setY(a * (getX() - 3) + b);
        }
        
    }