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