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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