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