A scientific calculator function is a type of calculator that is used to perform complex calculations. The three functions associated with this term are COSINE (6 letters), cosecant (8 letters), and antilog (7 letters). COSINE is a trigonometric function that is used to calculate the ratio of the side adjacent to an angle in a right triangle to the hypotenuse. Cosecant is the reciprocal of the COSINE function and is used to calculate the ratio of the hypotenuse to the side adjacent to an angle in a right triangle. Antilog is a logarithmic function that is used to calculate the inverse of a logarithm.