admin百科知識 2022-02-13 19:02:55 儅a=3pai 4時,sin (a+b)+cos (a+b )+sin (a-b)+cos (a-b)等於:A 1 B -更號22 C 0 D 更號22儅a=3pai /4時,sin (a b) cos (a b ) sin (a-b) cos (a-b)等於:A 1 B -更號2/2 C 0 D 更號2/2網友廻答:匿名網友 db標簽 生活常識_百科知識_各類知識大全»儅a=3pai 4時,sin (a+b)+cos (a+b )+sin (a-b)+cos (a-b)等於:A 1 B -更號22 C 0 D 更號22
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