sin_θ cos_θ tan_θ log ln sin⁻¹ cos⁻¹ tan⁻¹ √ xʸ π e |x| ( ) AC ⌫ % ÷ ± 7 8 9 × x² 4 5 6 − 1/x 1 2 3 + n! 0 . = MC MR M+ M− MS EE