prov that : cos A/1+sin A + 1+sin A/cos A = 2 sec A
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Step-by-step explanation:
cosA/1+sinA+1+sinA/cosA
=cos²A+(1+sinA)²/cosA(1+sinA)
=cos²A+1+sin²A+2sinA/cosA(1+sinA)
=2+2sinA/cosA(1+sinA)
=2/cosA
=2secA
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