What is the purpose of orange juice to tequila sunrise?

The purpose of Orange Juice in a tequila sunrise is to provide a sweet and citrusy flavor that balances the potency of the tequila. It also contributes to the drink's signature gradient appearance, resembling a sunrise, with the orange juice mixing with the tequila and the grenadine sinking to the bottom. This combination enhances the overall taste and visual appeal of the cocktail.