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[" 2"A=[[1,sin theta,1],[-sin theta,1,si...

[" 2"A=[[1,sin theta,1],[-sin theta,1,sin theta],[-1,-sin theta,1]]quad (" Varthav "0leqslant theta leqslant2 pi)" इआ,"],[" Enveloped "|A|=0," (В) "|A|in(2,oo)],[" () "|A|in(2,4)," () "|A|in[2,4]quad [" NCERT "]]

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