2、填空题
13.求sin72的按键顺序是_________.
14.求tan2542的按键顺序是__________.
15.求cot3219的按键顺序是__________.
16.用计算器cosplay184425=__________.
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2、填空题
13.求sin72的按键顺序是_________.
14.求tan2542的按键顺序是__________.
15.求cot3219的按键顺序是__________.
16.用计算器cosplay184425=__________.