The value of |(cos(x-a), cos(x+a), cosx)...

The value of `|(cos(x-a), cos(x+a), cosx),(sin(x+a), sin(x-a), sinx),(cosatanx, cosacotx, cosec2x)|=` (A) 1 (B) `sina cosa` (C) `0 (D) `sinx cosx`

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