How does professor Mc Conagal defeat the giants?

Professor McGonagall defeats the giants in "Harry Potter and the Order of the Phoenix" by using her Animagus form to transform into a cat, which allows her to be agile and quick in battle. She showcases her powerful magical abilities, casting strong spells to subdue the giants and protect her students. Her strategic thinking and leadership during the battle also play a crucial role in overcoming the threat. Ultimately, her bravery and skill as a witch help turn the tide in favor of the defenders.