cosecA(1-cosA)(cosecA+ cot A)
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Step-by-step explanation:
(cosecA-cosecA×cosA) (cosecA+cotA)
(cosecA-sinA/cosA) (cosecA+cotA)
(cosecA-cotA) (cosecA+cotA)
cosec^2A-cot^2A=1
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THEREFORE ANSWER IS 1
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