The original song of Song of Trigonometric Function is GNZ48, composed by PROJECTM and written by Huang Fengyi. This song was included in an album of GNZ48 and released on 20 18. Some lyrics are like this: "Whoever meets sine and cosine first and solves trigonometry can prove that youth is invincible." Diagonal distance, me and you. There is always a logic that is too changeable to play cards according to the cards. " The song of trigonometric function mainly talks about the knowledge of trigonometric function in mathematics. Through vivid and interesting lyrics, the song presents complex trigonometric function knowledge to the audience in a way that is easier to understand and remember. GNZ48 is a popular group of women in Chinese mainland, which is divided into three teams: gnz48team, GNZ48TeamNIII and gnz48team Z. It is the official sister group of SNH48 and BEJ48.