Question

(20 PONTOS) Simplifique:

$E=\dfrac{1}{2}\cdot \dfrac{\cos x}{1+\mathrm{sen\,}x}+\dfrac{1}{2}\cdot \dfrac{\cos x}{1-\mathrm{sen\,}x}$

Answer 1

 A resposta segue anexa. 


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17/02/2016 
Sepauto - SSRC
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