prove that cot A + cosec A -1/cotA- cosecA+1=1+cosA/sinA
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Step-by-step explanation:
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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