tanA/(1+tan²A)+cotA/(1+cot²A)=sinAcosA
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Step-by-step explanation:
=> tan A/sec²A + cot A/cosec² A [ 1 + tan²A = sec²A and 1 + cot²A = cosec² A ]
=> (sin A cos²A)/cos A + (cos A sin²A)/sin A
=> 2 cos A sin A
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