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