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[" 04) "(sin2A)/(1+cos2A)*(cos A)/(1+cos...

[" 04) "(sin2A)/(1+cos2A)*(cos A)/(1+cos A)=],[" A) "cosec(A)/(2)],[" B) "sec(A)/(2)],[" C) "cot(A)/(2)],[" D) "tan(A)/(2)]

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