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Let A=|[1,sintheta,1],[-sintheta,1,sinth...

Let `A=|[1,sintheta,1],[-sintheta,1,sintheta],[-1,-sintheta,1]|,` where `0lt=thetalt=2pidot` Then (a)`D e t(A)=0` (b) `D e t(A) in (2,oo)` (c)`D e t(A) in (2,4)` (d) `D e t(A) in [2,4]`

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