Cos A ÷1 +sin + 1+sin A ÷ CosA
= 2 sec A
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Step-by-step explanation:
cosA/1+sinA+1+sinA/cisA=2secA
cos2A+1+2sinA+sin2A/cosA(1+sinA)=2/cosA
since cos2A+sin2A=1
therefore
1+1+2sinA/cosA(1+sinA)=2/cosA
2(1+sinA)/cosA(1+sinA)=2/cosA
2/cosA=2/cosA
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