[" If "theta=cot^(-1)sqrt(cos x)-tan^(-1...

[" If "theta=cot^(-1)sqrt(cos x)-tan^(-1)sqrt(cos x)" ,then "sin theta=],[[" (A) "tan(1)/(2)x," (B) "tan^(2)(x/2)," (C) "(1)/(2)tan^(-1)(x/2)," (D) None of these "]]

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