sin sin⁻¹ π n! ( ) C backspace cos cos⁻¹ e |x| 1/x x² ²√x ÷ tan tan⁻¹ ʸ√x xʸ 7 8 9 × cosec cosec⁻¹ MOD 10ˣ 4 5 6 - sec sec⁻¹ logᵧx log 1 2 3 + cot cot⁻¹ eˣ ln +/- 0 . =