Mathematics
Senior High

五番と六番ってどうやるんですか?お願いします😭🙏😞

eeやでひひ 寺 に (3) COS2ァー3cosァ十2=0 (4④) sin2*=sinx X(5) 2cos守3cosg-2<0 (9) ソ3 sjmェーcosx>】 ル

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