Check out example codes for "unity rotation". It will help you in understanding the concepts better.

Code Example 1

``````transform.eulerAngles = new Vector3(0, 0, 180);
transform.localEulerAngles = new Vector3(0, 0, 180);
transform.eulerAngles = new Vector3(0, 0, 180);
transform.localRotation = Quaternion
transform.rotation = Quaternion.Euler(0, 0, 90);``````

Code Example 2

``````var rotationVector = transform.rotation.eulerAngles;
rotationVector.z = 0;  //this number is the degree of rotation around Z Axis
transform.rotation = Quaternion.Euler(rotationVector);
//if you put this in a coroutine and yielding for some amount of time

Code Example 3

``````using UnityEngine;// Transform.Rotate example
//
// This script creates two different cubes: one red which is rotated using Space.Self; one green which is rotated using Space.World.
// Add it onto any GameObject in a scene and hit play to see it run. The rotation is controlled using xAngle, yAngle and zAngle, modifiable on the inspector.public class ExampleScript : MonoBehaviour
{
public float xAngle, yAngle, zAngle;    private GameObject cube1, cube2;    void Awake()
{
cube1 = GameObject.CreatePrimitive(PrimitiveType.Cube);
cube1.transform.position = new Vector3(0.75f, 0.0f, 0.0f);
cube1.transform.Rotate(90.0f, 0.0f, 0.0f, Space.Self);
cube1.GetComponent<Renderer>().material.color = Color.red;
cube1.name = "Self";        cube2 = GameObject.CreatePrimitive(PrimitiveType.Cube);
cube2.transform.position = new Vector3(-0.75f, 0.0f, 0.0f);
cube2.transform.Rotate(90.0f, 0.0f, 0.0f, Space.World);
cube2.GetComponent<Renderer>().material.color = Color.green;
cube2.name = "World";
}    void Update()
{
cube1.transform.Rotate(xAngle, yAngle, zAngle, Space.Self);
cube2.transform.Rotate(xAngle, yAngle, zAngle, Space.World);
}
}``````

Learn ReactJs, React Native from akashmittal.com