admin百科知識 2022-02-12 19:49:42 已知cos(a-B2)=-19,sin(a2-B)=23,且π2掃碼下載作業幫拍照答疑一拍即得已知cos(a-B/2)=-1/9,sin(a/2-B)=2/3,且π/2掃碼下載作業幫拍照答疑一拍即得網友廻答:匿名網友 db標簽 生活常識_百科知識_各類知識大全»已知cos(a-B2)=-19,sin(a2-B)=23,且π2掃碼下載作業幫拍照答疑一拍即得
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