sin cos tan Deg Rad sin⁻¹ cos⁻¹ tan⁻¹ π e xʸ x³ x² eˣ 10ˣ y√x ³√x √x ln log ( ) 1/x % n! MC MR M+ M- MS 7 8 9 / ⌫ 4 5 6 × Ans 1 2 3 - M+ 0 . EXP + M- ± RND AC = MR