cotA+cosec A-1/
cotA-cosec A+1=
1+cos A/
sin A
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Step-by-step explanation:
cotA+cosecA-1/cotA-cosecA+1
=cotA+cosecA-(cosec²A-cot²A)/ cotA-cosecA+1
=(cosecA+cotA)(1-cosecA+cotA)/ (1-cosecA+cotA)
=cosecA+cotA
=1/sinA+cosA/sinA
=1+cosA/sinA
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