UnityEditor.TransformUtils.GetInspectorRotation(gameObject.transform).x is this good for use to my game?

Hi, I’m try to get exact reading of Inspector but can’t get it. I’m reading forums but they also don’t have clear solution. and I found this. but I need to know

myAngleX = UnityEditor.TransformUtils.GetInspectorRotation(gameObject.transform).x

using this may cause any problems or performance issues.

I’m making Plane Controller based on PID system. And i need to get my planes orientation in oder to feed my PID controller. It was working until i doing flip. When I turn it doing weird. So i debug it, and i found that my Pitch,Roll, Yaw readings correct but only for -90° to 90° only,

I used myAngleX = transform.LocalEulerAngle.x;

but when plane roll/pitch/yaw further ±90° it’ getting small again. ( -90 < 0 i know, i mean Abs of the Value ).

I mean for 180°, it shows 0° again, for 100° it shows 80°, same for (-) angles.

It only getting bigger as i expect until 90° further more it decreasing. I really need 0 to 180° values. So Please give tell me any solution to get that.

Thank You!