tanA÷(1+tan×tan A) square + cosA ÷ (1+ cot × cotA) square =sin A×cos A
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tanA÷ (1+sinA/cosA × sinA/cosA) square
tanA÷(1+sin sq A / cos sq A) square
tanA÷(cos sq A + sin sq A/cos sq A) square
tanA÷(1/cos sq A) square
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