Version: 2017.2
public static Quaternion Euler (float x, float y, float z);

Description

Returns a rotation that rotates z degrees around the z axis, x degrees around the x axis, and y degrees around the y axis (in that order).

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour { public Quaternion rotation = Quaternion.Euler(0, 30, 0); }

public static Quaternion Euler (Vector3 euler);

Description

Returns a rotation that rotates z degrees around the z axis, x degrees around the x axis, and y degrees around the y axis (in that order).

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour { public Quaternion rotation = Quaternion.Euler(new Vector3(0, 30, 0)); }