yc52
幼苗
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求∠A0OA1,∠A1OA2,∠A2OA3的大小
∠A0OA1=arctan1=45°
,∠A1OA2=arctan(1/√2)=35.26°
,∠A2OA3=arctan(1/√3)=30°
以此类推,
,∠A3OA4=arctan(1/√4)=26.56°
,∠A4OA5=arctan(1/√5)=24.09°
,∠A5OA6=arctan(1/√6)=22.21°
,∠A6OA7=arctan(1/√7)=20.70°
,∠A7OA8=arctan(1/√8)=19.47°
所以,n=8
1年前
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