cosa+1_sina/cosa-1+sina=1+(cosa/sina)
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Step-by-step explanation:
cosA+1-sinA/cosA-1+sinA
devide each term by sinA
=cotA+cosecA-1/cotA-cosecA+1
=(cotA+cosecA)-(cosec²A-cot²A)/ cotA-cosecA+1
=(cotA+cosecA)(1-cosecA+cotA)/ (cotA-cosecA+1)
=cotA+cosecA
=(cosA/sinA)+(1/sinA)
=(1+cosA)/sinA
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