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[" 70."sin A(1+tan A)+cos A(1+cot A)=sec...

[" 70."sin A(1+tan A)+cos A(1+cot A)=sec A+csc A],[" 71."(cos A-sin A+1)/(cos A+sin A-1)=csc A+cot A]

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sin A(1+tan A)+cos A(1+cot A)=sec A+cosec A

sin A (1 + tan A) + cos A (1 + cot A) = sec A + cosec A .

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Prove: sin θ(1 + tan θ) + cos θ(1 + cot θ) = (sec θ + cosec θ) .