Tigers use this helpful sense when they are interacting with other tigers, and not so much in hunting. Tigers use personal scents to mark their territory. Other tigers will be eager to smell the scent of their peers. Females use their scents to mark specific territories to let males know that they are ready to mate.
Although the sense of taste in a tiger is not that sophisticated, it has been established that they are probably able to taste acidic as well as sweet flavours. Tigers (and other cats in general) have only a fraction of the number of taste buds that we, as human beings, enjoy. This lack of complex tasting mechanisms accounts for the fact that tigers do not refuse to eat food that has become rotten.
Tigers use their well-developed sense of touch for several purposes. These include rubbing against one another (as in courting couples or family members) and for mothers to maintain personal contact with their cubs. However, using their very sensitive whiskers is another extremely important facet of their tactile sensory perception. These assist in navigation in the dark and detecting danger. When attacking their prey, the whiskers help the tiger to sense where the best place to bite the victim would be for an effective, quick kill.
These finely tuned senses demonstrate that, in addition to brute force and ferociousness, the tiger is also equipped with sophisticated means of living, hunting and procreating.