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The maximum value of Delta=|(1,1,1),(1,...

The maximum value of `Delta=|(1,1,1),(1,1+sintheta,1),(1+costheta,1,1)|` is (`theta` is real) (A) `1/2` (B) `(sqrt(3))/2` (C) `sqrt(2)` (D) `-(sqrt(3))/2`

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