Mathematics
Senior High
(1)と(2)教えてください!!
「のとき,不等式 tsn9 >1を解け。
ィく9< 7, 計二革 7 く9< 計
中 18 」
4 [6」
りー3r+2.リニーミィー 3 のな
す角りについて, cos2の胡を求め
だし.0<0<=とする
9
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