(ii) (1 - cos A) (1 + sec A) = tan A sin A.
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Step-by-step explanation:
(1-CosA)(1+1/CosA)=(SinA/CosA)SinA
(1-CosA)(CosA+1/CosA)=(sin^2A/CosA)
(1- cos^2A)/CosA=sin^2A/CosA
sin^2A/CosA=sin^2A/CosA
hence proved
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