[" 2.Let "Delta=|[1,sin theta,1,,],[-sin...

[" 2.Let "Delta=|[1,sin theta,1,,],[-sin theta,1,sin theta," Then "Delta" lies in interval "],[-1,-sin theta,1]|," (b) "[2,4]],[" (a) "[3,4]," (d) None of these "],[" (c) "[1,4],]

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