NCERT Miscellaneous Exercise Q9 - Determinants

Question: Let A=[[1,sin theta,1],[-sin theta,1,sin theta],[-1,-sin theta,1]] where 0 <= theta <= 2 pi. Then (A) Det(A)=0 (B) Det(A) in (2, infinity) (C) Det(A) in (2,4) (D) Det(A) in [2,4].

Answer: (D).

Full step-by-step NCERT solution with diagrams on Something by Zero.

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