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