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[" if "A=[[1,sin theta,1],[-sin theta,1,sin theta],[-sin theta,-sin theta,1]]" then for all "O in((3 pi)/(4),(5 pi)/(4))],[[" (a) "(1,(5)/(2)],(6,(3)/(2)]," (c) "[(5)/(2),4),(2)/(3)/(2),3]]]

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