数学ガールの秘密ノート/丸い三角関数

[DeepL Translation - needs review] A new series of "Math Girl" is born! This e-book is distributed in "Fixed Layout Type". Please be sure to read the "Notes on Fixed Layout Type" at the end of the description. Three girls and "I" solve middle and high school level mathematics in an easy-to-understand way. This is the first volume of a new series where you will encounter new discoveries. This is the first in a new series, "Math Girl's Secret Notebooks. I" and three girls (Milka, Tetra, and Yu...