Write a Python function to check if two strings are anagrams.

def are_anagrams(str1, str2):\n # Method 1: Sort characters\n return sorted(str1.lower()) == sorted(str2.lower())\n\n# Method 2: Count characters\nfrom collections import Counter\ndef are_anagrams(str1, str2):\n return Counter(str1.lower()) == Counter(str2.lower())