For a right triangle ABC, you are told that cos A= x and sin A= y. Which option below gives an expression that is
equivalent to tan A?
1x2 + 12

Answer asap and if you do you will get brainliest. catherine buys a gallon of ice cream from the store. after taking it home, she eats a fifth of a gallon of ice cream. her sister eats some of the ice cream as well. if two-thirds of the original amount of ice cream is left, then what fraction of a gallon of ice cream did her sister eat?