Tyrannosaurus rex, one of the largest terrestrial carnivores to have ever lived, likely used a combination of stealth and power to hunt its prey. It had powerful legs for quick bursts of speed, sharp teeth for tearing flesh, and a keen sense of smell to locate its prey. However, its small arms suggest it didn't use them much in hunting.
Pro tip: While T-rex is often depicted as an active hunter, some paleontologists suggest it may have also been a scavenger, feeding on already dead animals.